Dawlatsháh * is equally flattering, and, with his usual exaggeration, goes so far as to say that “from the time of Adam until this our day no age, period, cycle or moment can be indicated in which the people enjoyed such peace The same according to Dawlatsháh and tranquillity as they did in his [Sháh-rukh's] days.” He adds that such were the virtues of this Prince that he was credited with miraculous gifts and knowledge of the Unseen. Of the two instances of this which Dawlatsháh gives, one rests on the authority of his father, who was one of his familiar attendants. Ulti­mately, however, according to this writer, Sháh-rukh incurred the Divine displeasure by putting to death three learned and pious men of Iṣfahán whom he suspected of having encouraged his grandson Sulṭán Muḥammad Báysunqur in his revolt against him. These cursed him ere they died, and “the doors of Heaven being open, the prayers of those innocent and illustrious victims were answered; the seed of that highly-placed king was cut off, and the sovereignty returned to its original source.” Amongst the many artists, poets and men of learning contemporary with Sháh-rukh Dawlatsháh * mentions four in particular as conferring special lustre on his court, namely 'Abdu'l-Qádir of Marágha the musician (who is mentioned by Munajjim-báshí * as one of the eminent victims of the plague which afflicted Herát in 838/1434-5), Yúsuf of Andakán the minstrel, Qiwámu'd-Dín the engineer and architect, and Mawláná Khalíl the painter, who in skill was “second only to Mání” (Manes).

The Turkish historian Munajjim-báshí * speaks not less favourably than the writers already cited of Sháh-rukh's The same according to Munajjim-báshí character. “He was,” says he, “a wise, just, prudent and benevolent king, prone to forgive and to do good, devout, temperate and pious, so that alike at home and on the march, nay, even in time of war and battle, he never neglected the morning, noon and evening prayers, while on ‘white days’ and on the first day of each month he used to fast, and on the eve of Fridays, Mondays and Thursdays he used to assemble those who knew the Qur'án by heart and cause them to recite the entire scripture in his presence. During the whole period of his life he never knowingly committed a major sin. He con­tinually sought the society of learned and pious men, on whom he conferred the greatest benefits and favours. He never suffered defeat, but was always favoured by fortune and victorious. To whatever land he went, he first of all used to visit any shrine which might exist there.” His empire, in the words of the same writer, extended “from the confines of China to the frontiers of Rúm (Turkey in Asia), and from the remotest parts of Turkistán to the limits of India.”

Of Sháh-rukh's five sons * only one, Ulugh Beg, survived to succeed him. Of the other four Báysunqur, who died of Báysunqur Mírzá drink (the curse of this family) in 837/1433 at the age of 37, was, perhaps, the most talented, * and the greatest patron of art and learning, to whose court flocked poets, artists, scholars, calligraphists, miniature-painters, book-binders and illuminators from 'Iráq, Fárs, Ádharbáyján, and all parts of Persia. In connection with Persian literature he is chiefly associated with the preface prefixed to the Sháh-náma of Firdawsí in his name and composed for him in 829/1426. The following chronogram of his death is given in the Ḥabíbu's-Siyar:

<text in Arabic script omitted>

“In the morning that august prince Báysunqur said to me,
‘Tell tidings of me to the people of the world:
I am gone, and this is the date of my death—
May my father's life be long in the world!’”*

Sháh-rukh died near Ray on March 13, 1447, and, as stated above, was succeeded, though not peaceably, by his Ulugh Beg son Ulugh Beg, who had during his father's life-time been governor of Túrán or Turkistán. It was during this period, in 824/1421, that he built at Samarqand his celebrated observatory, where, with the col­laboration of four eminent men of learning, Ṣaláḥu'd-Dín Músá, called Qáḍí-Záda-i-Rúmí (“the Turkish Judge's son”); Mullá 'Alá'u'd-Dín 'Alí Qúshjí, the commentator of the Tajríd; Ghiyáthu'd-Dín Jamshíd; and Mu'ínu'd-Dín of Káshán, he compiled the notable astronomical tables known as the Zíj-i-Ulugh Beg, or Zij-i-jadíd-i-Sulṭání, which were probably completed in 841/1437-8, and concerning which full particulars are given by Rieu.*

Ulugh Beg, as already indicated, did not at once succeed in establishing his supremacy, which was contested by Ulugh Beg is murdered by his son 'Abdu'l-Laṭíf 'Alá'u'd-Dawla, who seized Herát and cast 'Abdu'l-Laṭíf, the son of Ulugh Beg, into prison. Nor did his authority, when established, endure long, for he was killed at the instigation of his son, the above-mentioned 'Abdu'l-Laṭíf, on Ramaḍán 10,853 (October 27, 1449) by a certain 'Abbás, the year of this tragic event being given by the chronogram 'Abbás killed [him] (<text in Arabic script omitted>).

'Abdu'l-Laṭíf, not content with the murder of his father, also murdered his brother 'Abdu'l-'Azíz, but did not long 'Abdu'l-Laṭíf profit by his crime, for he in turn was murdered in the ensuing year, 854/1450, by a certain Bábá Ḥusayn, this date, curiously enough, being given by the chronogram Bábá Ḥusayn killed [him] (<text in Arabic script omitted>). Mírkhwánd, in recording this event, cites the well-known dictum of the poet Niẓámí as to the short-lived prosperity of royal parricides:

<text in Arabic script omitted>

“The parricide is unworthy of sovereignty:
[Even] if he attains it, he will not survive more than six months.”

“This 'Abdu'l-Laṭíf,” says the Turkish historian Munajjim Báshí, * “was a talented and accomplished man, but very impetuous, blood-thirsty and pitiless, so that men's hearts were turned aside from him. With his death the succession of Ulugh Beg came to an end in Transoxiana.”

From this period onwards until its extinction in Persia the House of Tímúr rapidly declined in power, cohesion 'Abdu'lláh b. Ibráhím Sulṭán b. Sháh-rukh and territorial possessions, and even the suc­cession of rulers is somewhat uncertain, or, to be more precise, it is uncertain which should be accounted supreme and which subordinate. Thus Stanley Lane-Poole * regards 'Abdu'lláh, the son of Ibráhím Sulṭán, the son of Sháh-rukh, as the successor of 'Abdu'l-Laṭíf; while Mírkhwánd substitutes Mírzá Abu'l-Qásim Bábur (not the great Bábur), the son of Báysunqur, the son of Abu'l-Qásim Bábur b. Báysunqur Sháh-rukh. He died in 861/1456-7, having lost 'Iráq, Fárs and Kirmán four years previously to Jahánsháh, son of Qará Yúsuf of the “Black Sheep” Turkmáns, and killed his brother Sulṭán Muḥam-mad, the expelled ruler of Fárs, in battle.

Mírzá 'Alá'u'd-Dawla, another son of Báysunqur, was acting as governor of Herát at the time of his grandfather 'Alá'u'd-Dawla b. Báysunqur Sháh-rukh's death, but, after a certain show of opposition, he made peace with Ulugh Beg and Bábur, and contented himself with the govern­ment of a district extending from Khabúshán in Khurásán to Astarábád and Dámghán. In 852/1448-9 he was defeated by Ulugh Beg near Herát and driven into Badakhshán and the Plain of Qipcháq. After various vicissitudes, including sundry wars with his brothers and a period of allegiance to Jahán-sháh, the “Black Sheep” Turkmán and enemy of his House, he finally died in 875/1470-1. His son Ibráhím, having escaped from the custody of his uncle Abu'l-Qásim Bábur, fled to Murgháb and there collected a considerable Ibráhím b. 'Alá'u'd-Dawla army. He occupied Herát and defeated his cousin Mírzá Sháh Maḥmúd, whom he was preparing to crush at Astarábád when be was suddenly attacked by the redoubtable “Black Sheep” Turk-mán Jahánsháh. Abandoning Herát he fled before the invader, but returned on the withdrawal of the latter, only to suffer defeat at the hands of Sultán Abú Sa'íd. He died in 863/1458-9 on the march from Dámghán to Mashhad, and his cousin and rival, the above-mentioned Mírzá Sháh Maḥmúd, was killed in the same year.