Sayyiduna Abu Darda’ (may Allah be pleased with him) narrates: There are four qualities which I heard from the tongue of the Prophet (peace and blessings be upon him), but I have not mentioned them to you before; today I will tell you about them. I heard the Prophet (peace and blessings be upon him) say:“Do not declare anyone from the people of the Qiblah to be an unbeliever because of a sin, even if he commits a major sin. And perform prayer behind every Imam, and perform jihad with every leader (the narrator is unsure, perhaps these are the words) or fight with them. And the fourth thing is: speak only good about Abu Bakr al-Siddiq, Umar, Uthman, and Ali, and say: That was a community that has passed away; for them is what they earned, and for you is what you earn of good deeds.”