A quick collection of ʿAbd al-Ḥamīd's letters with his prolegomenon is considered his early function.[three] In his Highly developed age, ʿAbd al-Ḥamīd retired to Patna, from exactly where he was summoned by Shah Jahān to write official chronicle of his reign on the recommendation of his grand vizier Nawab Saʿdallāh Khan, as emperor want