Are you talking about this quote that I quoted:
"Moses was a lawgiver, and promulgated a new code; so did Mahomed. Jesus, on the contrary, declared he was not come to abrogate but to "fulfill the law;" and declared that "not a jot or little of the law should pass away until all these things were fulfilled." The Christian heresies have, by their laxity and corruption, subverted the decent observances of the law, and introduced a heathen license; but Islam confirms and fulfills this prophecy and ordinance completely.... But the still greater light to be brought by Mahomed is now to be foretold. At Isi. c. 21, v. 13-15 the Hegira is predicted. "In the forest in Arabia shall ye lodge ye travelling companies of Dedanim" The whole of the tribe of Dedan, to which Obeidollah and many other distinguished Mussulman fathers belonged, emigrated to Medina, leaving their houses in Mecca locked up. "The inhabitants of the land of Tema (the name of a son of Ishmael, and the name of the tribe to which the Prophet's father-in-law Abueka belonged) brought water to him that was thirsty, they prevented with their bread him that fled." The part of the Hijaz in which Medina is situated is called Tema to-day, doubtless from the tribe of Tema. The whole of the twenty-eighth of Isaiah is a prophecy of the mission of Mahomed and of Islam as the 'mighty and strong one,' and 'the overflowing scourge.' * * * And here also the peculiar mode in which the Koran was revealed, and the personal characteristics of the Prophet, are quite literally depicted. * * *"
