Surah 19. Maryam, Ayah 54

After the mention of Moses, who descended from Abraham through Isaac, we are reminded of Ishmael, Abraham's first-born son and the progenitor of the "northern" group of Arab tribes, and thus of the Prophet Muhammad, who descended in direct line, through the tribe of Quraysh, from Ishmael.

Isma'il was Az-zabih i.e., the chosen sacrifice for Allah in Muslim tradition. When Abraham told him of the sacrifice, he voluntarily offered himself for it, and never flinched from his promise, until the sacrifice was redeemed by the substitution of a ram under Allah's commands. He was the fountain-head of the Arabian Ummat, and in his posterity came the Prophet of Allah. The Ummat and the Book of Islam reflect back the prophethood on Isma'il.