Imam Sadiq [a] said: “When you are informed of a fellow companion committing an evil action, then go to him and tell him: ‘O so and so! Either refrain from committing this sin or keep away from us’; then, avoid him unless he does so.”[i]

[i] Wasa’il-ush-Shi’ah, vol. 16, p. 146

The Holy Prophet [s] said: “When you meet each other then initiate greeting (salam) and embrace; and when you separate from each other, then depart with seeking forgiveness.”[i]

[i] Bihar-ul-Anwar, vol. 76, p. 4