who is rahim ??

Rahim was son of Bairam Khan, Akbars trusted caretaker, who had Turkic ancestry. When Humayun returned to India, from his exile, he asked the nobles to forge matrimonial alliances with various zamindars and feudal lords, across the nation. While Humayun himself married the elder daughter of Jamal Khan of Mewat (present Mewat district of Haryana), he asked Bairam Khan to marry the younger daughter.

Gazetteer of Ulwur states:

Soon after Babar's death, his successor, Humayun, was in 1513 supplanted by the Pathan Sher Shah Suri, who, in A.D. 1545, was followed by Islam Shah. During the reign of the latter a battle was fought and lost by the Emperor's troops at Firozpur, in Mewat, on which, however, Islam Shah did not loose his hold. Adil Shah, the third of the Pathan interlopers, who succeeded in A.D. 1552, had to contend for the empire with the returned Humayun.^[2]

In these struggles for the restoration of Babar's dynasty Khanzadas apparently do not figure at all. Humayun seems to have conciliated them by marrying the elder daughter of Jamal Khan, nephew of Babar's opponent, Hasan Khan, and by causing his great minister, Bairam Khan, to marry a younger daughter of the same Mewatti.^[2]