The Institutes of Akbar 312: 82. Shaikh Ibrahim, son of Shaikh Musa, elder brother of Shaikh Salim of Fathpur Sikri.

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His father, Shaikh Músá, lived a retired life in Sikri. As Akbar had at first no children, he asked the Sikri Shaikhs to pray for him, which they did; and as at that time one of Akbar’s wives became pregnant (with Salim), Akbar looked upon the Shaikhs with particular favor. To this lucky circumstance, the Sikrí family owes its elevation.
Shaikh Ibrahim lived at first at Court, chiefly in the service of the princes. In the 22nd year, he was made T’hánahdár of Ládlaí, and suppressed the disturbances. In the 23rd year, he was made Governor of Fathpúr Sikri. In the 28th year, he served with distinction under M. ’Aziz Kokah (No. 21) in Bihár and Bengal, and was with Vazir Khan (No. 41) in his expedition against Qutlú of Orísá. When Akbar, in the 30th year went to Kabul, he was made Governor of Agrah, which post he seems to have held till his death in 999 (36th year).
According to the Tabaqát, he was not only the brother, but also the son-in-law of Shaikh Salim i Sikriwál.