When is it said: "Allah and His Messenger know best"?
Machine translationRead the Arabic original
Question:
He asks: When is it said, "Allah and His Messenger know best"?
Answer:
In every matter of the religion that you do not know, if you are asked about it and you do not know it, say, "Allah knows best." As for "Allah and His Messenger know best," that was during the lifetime of the Messenger (peace and blessings be upon him). After his death, we say, "Allah knows best." Yes.
He asks: When is it said, "Allah and His Messenger know best"?
Answer:
In every matter of the religion that you do not know, if you are asked about it and you do not know it, say, "Allah knows best." As for "Allah and His Messenger know best," that was during the lifetime of the Messenger (peace and blessings be upon him). After his death, we say, "Allah knows best." Yes.
Source
قناة «العلامة الدكتور صالح الفوزان»، [3205] متى يقال: "الله ورسوله أعلم"؟ - صالح الفوزان — youtube.com
The Arabic text is a machine transcription of the audio recording.