[2:136] Say: 'We believe in God, and in that which has been revealed to us, and revealed to Abraham, Ishmael, Isaac, Jacob, and the Tribes, and that which was given to Moses, and Jesus, and the prophets, from their Lord, we make no division between any of them, and to Him we submit'.
Because our Prophet (ṣ) believed in everything that was revealed before him, he was honored with everything that [God] had conferred in honor before him. When [God] proclaimed the harmony (muwāfaqa) of all [the messages of the prophets], He entrusted everything in existence under [Muḥammad's] banner. [Muḥammad] said, 'Adam and all others shall be under my banner at the Day of the Resurrection'.
When his community believed in everything that God revealed to His messengers and made no division between any of them, they drew the highest share in honor and took precedence over all communities.