Rubbish Opinions
Mālik b. Mighwal said:
Al-Sha’bī once said to me, “When these [people] report to you from Allāh’s Messenger – praise and peace of Allāh be upon him, adhere to it; but when they merely opine, throw it in the trash.” Al-Dārimī, Al-Sunan 1:78.
Al-Dārimī, Al-Sunan 1:78.
Also read
Related sayings.
The status of personal opinion in the face of what has come from the Companions.
The Salaf used to be careful not to speak in front of elders unless absolutely needed.