The History of Shēr Shāh (Tārīkh-i Shērshāhī) 3.7.2

3.7.2

After this, Sher Khan took counsel with his brother Nizam and others, saying, "I have no longer any confidence in the Mughals, or they in me; I must go to Sultan Muhammad Khan." He decided on this plan, and when he came to Sultán Muhammad, in Bihar, the latter was much delighted, for he had had experience of his great talent. He entrusted his son Jalal Khán to him, and said: "I make you my son's lieutenant. Do you instruct him with all your care, for he is of tender age." Sher Khán was much pleased, and took great pains in the discharge of his office. When Sultán Muhammad died, his son Jalal Khan succeeded him, whose mother's name was Dúdú, a concubine; and being himself very young, his mother Dudu ruled the kingdom, and she made Sher Khan her deputy in the Government of Bihár and its dependencies. After the death of Dúdú, Sher Khán also discharged the duties of the State as deputy for Jalál Khán.