In accordance with a narration, after The Prophet (pbuh), the Ummah will be divided into 73 sects, 72 sects will go to hell, and just one of them will go to heaven.
Mu’awiyah b. Abi Sufiyan stood among us and said: Beware! The Apostle of ALLAH (SAWS) stood among us and said: Beware! The people of the Book before were split up into seventy-two sects, and this community will be split into seventy three: seventy-two of them will go to Hell and one of them will go to Paradise, and it is the majority group. Ibn Yahya and ‘Amr added in their version : “ There will appear among my community people who will be dominated by desires like rabies which penetrates its patient”, ‘Amr’s version has: “penetrates its patient. There remains no vein and no joint but it penetrates it.”
So, is it mandatory for Muslims to change their current sects and choose the right sect? (If they find a sect which has more logical reasons or authentic narrations to prove its legitimacy)
As many Muslims are searching and discussing regarding different issues of Islam (even regarding various sects), accordingly many of them will encounter many authentic evidences which could indicate the legitimacy of some sects (or precisely one sect) in compare with their current sects. Hence my question is that:
Is it mandatory for Muslims to select the right sect (when they see some authentic and logical evidences which mention the legitimacy of a sect) or they solely must defend their sects?
Or is it recommended (Mustahab) to change their sect and choose the right sect in the case above?