Sayyiduna Abdullah (may Allah be pleased with him) narrates that a man said: O Messenger of Allah! When I do a good deed, how will I know that I have done good? The Prophet (peace and blessings be upon him) said: "When you hear your neighbors saying that you have done good, then you have done good; and when you hear them saying that you have done evil, then you have done evil."

Sayyiduna Abu Umamah (may Allah be pleased with him) narrates that a man asked: "O Messenger of Allah! What is faith?" He (peace and blessings be upon him) replied: "When your good deed pleases you and your bad deed displeases you, then you are a believer." He said: "O Messenger of Allah! What is sin?" He (peace and blessings be upon him) replied: "When something pricks your heart, then leave it (considering it a sin)."

Sayyiduna Imran bin Husain (may Allah be pleased with him) narrates that the Noble Prophet (peace and blessings be upon him) said: "When a man says to his brother: 'O disbeliever!' then (the sin of) it is equivalent to killing him, and cursing a believer is also like killing him."

Sayyiduna Imran bin Husain (may Allah be pleased with him) narrates that the Prophet (peace and blessings of Allah be upon him) said: "When a man says to his brother: 'O disbeliever!' then (the sin of) it is equivalent to killing him, and cursing a believer is also like killing him."

Sayyiduna Abdullah bin Umar (may Allah be pleased with them both) narrates that the Messenger of Allah (peace and blessings be upon him) said: "If a man calls his brother a disbeliever, then one of them will certainly become a disbeliever. If the person is truly a disbeliever, then it is correct; otherwise, this description will return to the one who said it."

Sayyiduna Abu Hurairah (may Allah be pleased with him) narrates that the Messenger of Allah (peace and blessings be upon him) said: "Four characteristics of the Age of Ignorance will remain in my Ummah; they will never abandon them: (1) wailing (over the dead), (2) casting aspersions on lineage, (3) considering disease to be contagious and saying that a hundred camels got mange because of one mangy camel—so the question is, who gave the first camel mange? and (4) belief in the stars, that is, saying that rain fell because of such-and-such star."

Sayyiduna Abu Malik Ash'ari (may Allah be pleased with him) narrates that the Prophet (peace and blessings be upon him) said: "Four traits of ignorance will be found in my Ummah, and they will not abandon them: (1) boasting about lineage (family greatness), (2) defaming ancestry, (3) seeking rain through the stars, and (4) wailing."

It is narrated from Sayyiduna Abu Hurairah (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) said: "There are three matters that belong to the time of ignorance, but the people of Islam will not abandon them: wailing, seeking rain through the stars, and doing like this." I asked Sa'id Maqbari, "What is meant by 'doing like this'?" He said: Calling out with the calls of ignorance, (that is, saying): O so-and-so! O so-and-so! O so-and-so!

It is narrated from Sayyiduna Abu Hurairah (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) said: "People will not abandon two practices of the Age of Ignorance: wailing over the dead and casting aspersions on lineage."

Sayyiduna Anas (may Allah be pleased with him) narrates that the Messenger of Allah (peace and blessings be upon him) said: "Three things will remain in my Ummah: boasting about family lineage, wailing, and seeking rain through the stars."