Mubárizu'd-Dín Muḥammad is generally reckoned the first of the Muẓaffarí dynasty, the duration of which, from Mubárizu'-d-Dín Muḥammad his accession in A.D. 1313 to the extirpation of the dynasty by Tímúr in A.D. 1393, covered a period of 80 years. His original government, as we have seen, was the little town of Maybud near Yazd, but in A.D. 1319 the latter town was added to his jurisdiction. In A.D. 1340 Kirmán also fell to his share, though the previous ruler, Quṭbu'd-Dín, invoked and received help from the Kurt kings of Herát, and offered a stubborn resistance. In A.D. 1353, after a still more prolonged struggle, he succeeded in wresting the province of Fárs with its capital Shíráz from Abú Isḥáq Injú, whose little son, 'Alí Sahl, aged ten, was taken prisoner and cruelly put to death by Sháh Shujá' at Rafsinján. One of Mubárizu'd-Dín's first measures was to enact severe laws against wine-drinking and other forms of dissipation prevalent amongst the pleasure-loving Shírázís, concerning which his son Sháh Shujá'composed the following quatrain:

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“Closed are the taverns now throughout the land;
Zither and harp and tambourine are banned;
Banned is wine-worship to the libertine;
Only the proctor's * drunk, though not with wine!”

In the following year, A.D. 1354, whether in consequence of this unpopular measure or not, Shíráz was seized by rebels against the Muẓaffarís, but was soon retaken. About this time Mubárizu'd-Dín declared his allegiance to the titular Caliph al-Mu'taḍid, * whose name he caused to be inserted in the khuṭba. In A.D. 1357 Iṣfahán was attacked Abú Isḥáq Injú put to death and ultimately taken, and its ruler Shaykh Abú Isḥáq Injú was captured, brought to Shíráz, and there put to death at Mubárizu'd-Dín's command by Amír Quṭbu'd-Dín, the son of Sayyid Amír Ḥájji Ḍarráb, who had suffered death by order of Abú Isḥáq. It is said that just before his death Abú Isḥáq recited the two following quatrains:

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“No hope in kin or stranger doth remain,
Nor to the bird of Life one single grain;
Of all we said throughout our life, alas!
Naught will survive us save an echo vain!”

“Depart and quarrel not with Fortune's spite;
Depart, nor strive with circling Heaven's might:
Drain with a smile the poison-cup of Death
And pour libations ere you take your flight.”

After capturing Iṣfahán, Mubárizu'd-Dín marched on Tabríz, which also he occupied, after two engagements with the troops of Akhí Júq, whom his sons pursued as far as Nakhjuwán. Finally, however, his fortune turned against him, for his sons Maḥmúd and Shujá', apprehensive of his intentions towards them, seized and blinded him when they reached Iṣfahán on the homeward march, and imprisoned him first in the castle of Ṭabarak and then in the Qal'a-i-Safíd in Fárs, where he succeeded in winning over the warden to his interests. Some sort of reconciliation was eventually effected between him and his rebellious sons, but it did not long endure, and Mubárizu'd-Dín finally died in prison at Bam in Rabí' 1 (December, 1363), at the age of sixty-five.*