He received the title Malik-us-Sharq (Lord of the East) from Sultan Iltutmish.
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In 1228, Nasiruddin attacked and killed Prithu, a Khen ruler (reigned: 1185–1228) of Assam.
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Nasiruddin Mahmud (reigned: 1227–1229) was the son of Sultan Shamsuddin Iltutmish.
Mahmud of Ghazni | Mahmud II | Khurshid Mahmud Kasuri | Abdul Taib Mahmud | Hajji Mahmud | Sultan Mahmud | Shah Mahmud Khan | Sayyed Mahmud Khan | Order of Sultan Mahmud I of Terengganu | Nasiruddin Yousuff | Mustafa Mahmud | Muhammad ibn Mahmud Amuli | Mahmud Tarzi | Mahmud Shah (Sultan of Bengal) | Mahmud Shah Durrani | Mahmud Shah | Mahmud Namık Osmanoğlu | Mahmud Khan Puladeen | Mahmud Khan I | Mahmud | Khalid Mahmud Arif | Kara Mahmud Bushati | Dolar Mahmud | Altaf Mahmud | Al Mahmud |