Usman Serajuddin
ʿUthmān Sirāj ad-Dīn al-Bangālī (Arabic: عثمان سراج الدين البنغالي; 1258-1357), known affectionately by followers as Akhi Siraj (Bengali: আখি সিরাজ), was a 14th-century Bengali Muslim scholar. He was a Sufi belonging to the Chishti Order and was a disciple of Nizamuddin Auliya of Delhi.