The Cambridge History of India, Vol. III: Turks and Afghans v3.c28.38

v3.c28.38

² Yūsuf claimed to be a son of Murād II, of Turkey, saved from the customary massacre of the males of the imperial house by the affection of his mother, who caused him to be secretly conveyed from the palace on the accession of his elder brother, Muhammad II, and delivered to a Turkish or Persian merchant of Sāva, who brought him up as his adopted son. There is little or no evidence in support of this legend, and the most that can be said of it is that it involves no impossibilities and may be true; but it is at least equally probable that Yūsuf was a Turk of Sāva. The principal objection to the legend that he was a scion of the imperial house of Turkey is that he was a bigoted Shiah, and was the first Muslim ruler in India to attempt to establish that faith as the state religion in his kingdom.