Remember that morning Thou didst leave Thy household (early) to post the faithful at their stations for battle: And Allah heareth and knoweth all things:
With this verse begins the commentary on the battle of Uḥud and its effects. As it had recently taken place and its memory was quite fresh in minds, a mere hint or a passing reference to it would have been enough for a contemporary audience. However, as this commentary deals with certain circumstances and effects that touched on conspiracies by some parties or were related to how people perceived and reacted to the attributes of Allah being the all-Hearing and all-Knowing, these are cited in the opening sentence. There was and is no room for any refuting or challenging the veracity of this account. It is by the One Who knows all and hears all. And whatever He has said is based on his flawless knowledge, hearing and seeing.
Islahi, Amin Ahsan. Pondering Over The Qur’an: Surah Ali Imran (p. 232). Islamic Book Trust. Kindle Edition.