'Indeed, this is the manifest trial.' [Meaning: The matter with which I tested you—that you sacrifice your firstborn and only son for My sake—is great.] It means: It is a clear blessing upon you from Allah, for you did not have to sacrifice your son.

Muhammad said: '(And We called to him)'—some scholars have mentioned that this is the response to His saying: 'And when they had both submitted and he put him down upon his forehead,' and the 'waw' (and) is extraneous. And Allah knows best.