تفسير : (and lo! of his persuasion) of noah's persuasion; and it is also said this means: of muhammad's persuasion (verily was abraham) he says: abraham followed the religion and way of noah and muhammad (pbuh) followed abraham's religion and way.
Jalāl al-Dīn al-Maḥallī
تفسير : and truly of his adherents, that is, of those who agreed with him on the fundaments of religion, was abraham, despite the fact that there was a long interval between them, 2640 years, and between them came [the prophets] hūd and sālih.