The Nāṣirī Generations 120: II. MALIK TAJ-UD-DIN, MUHAMMAD SON OF I-BAK.

120

When the mother of Taj-ud-Din, Muhammad, passed away, and his father died, he became ruler of the kingdom of Khwarazm in succession to them. He also had a brother, and of his own father and mother, younger than himself; and upon him he conferred the government of the tribes of Kankuli and Kifchak, from which their own race had sprung, his brother having solicited it, and Malik Taj-ud-Din acceded to his request.
That same brother had sons who acquired great distinction, and became powerful Maliks in Khurasan and 'Irak. During the time of Sultan Takish-i-Khwarazm Shah, and his son, Sultan Muhammad, they were Maliks of Khurasan, like as was Ulugh Khan-i-Abi, Muhammad, Khan of Guzarwan. Subsequently he became Khan of 'Irak under the name of Ata-bak, or preceptor, of the great Sultan, Rukn-ud-Din, Ghuri Shanasti, son of Muhammad, Khwarazm Shah.
Ulugh Khan-i-Abi, Muhammad, had two sons, the eldest, Taj-ud-Din, Azabar Shah, and the younger, Nusrat-ud-Din, Kutlagh Shah; and there were likewise brothers’ sons of Ulugh Khan-i-Abi, Muhammad, in Hindustan, such as Malik Firuz-i-I-yal-timi, son of Salar, and Malik Taj-ud-Din, Binal-Tigin, who left Hindustan, and became Malik of Sistan; and whose narrative this is.
This Malik Taj-ud-Din, Muhammad, son of I-bak, was an intrepid, just, and resolute sovereign; and he came to the Court of the Saljuk sovereigns, and paid homage to authority them. He performed great deeds, and ruled the people with equity and beneficence.
He reigned for a long time, subordinate to the Saljuks, and died.