The Nāṣirī Generations 122: IV. MALIK I-YAL-ARSALAN, SON OF JALAL-UD-DIN, UTSUZ.

122

Malik I-yal-Arsalan ascended the throne of Khwarazm after the decease of his father, and assumed authority over the whole of his late father's dominions. He ruled his people with justice and benevolence, and concluded a treaty with the infidels of Kara Khita, whereby he stipulated to pay a certain fixed tribute yearly.
He contracted an alliance with the Khans of Kifchak, and guarded his dominions to the best of his power and ability. He became involved in disagreements and hostilities with some of the slaves of Sultan Sanjar who were rulers of Khurasan, and peace was brought about in the manner he could best effect.
He reigned for a long time, and died leaving sons behind him, such as ’Ala-ud-Din, Takish, and Sultan Shah, Mahmud.