Opinion in religion, devoid of evidence, is rubbish to be thrown away. Adherence is to what comes from Rasulullah – praise and peace of Allah be upon him.
Two Calamities for Fitnah
It is reported that Al-Shaʿbī – Allāh have mercy on him – said:
Stay away from the sinful amongst the scholars and the ignorant amongst the worshippers, for these two are the calamity of everyone who would fall into fitnah.
Al-Bayhaqī, Shuʿab Al-Īmān ḥadīth 1753.
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.