Should We Say “Allah ﷻ and His Messenger ﷺ Know Best”? – Shaykh Salih al-Fawzan
Shaykh Salih al-Fawzan explains that during the time of the Prophet ﷺ people used to say, “Allah ﷻ and His Messenger ﷺ know best.” After the Prophet ﷺ passed away, this phrase is no longer used. Instead, when someone does not know something—whether it is about religion or worldly matters—they should simply say, “Allah ﷻ knows best.”
Questioner:
“Does a person in a state of ignorance (today) say “Allāh and His Messenger know best” and is this (only) said regarding matters of the religion or can it (also be) said regarding worldly affairs?”
Shaykh Ṣāliḥ ibn Fawzān al-Fawzān:
“This used to be said when the Messenger was alive. It would be said “Allāh and his Messenger know best.” When the Messenger died, it was then said: “Allāh knows best.”
(He should) say “Allāh knows best” in everything which he doesn’t know, whether in the matters of the religion or worldly. Everything he doesn’t know then he should say: “Allāh knows best.”