It is narrated from Sayyiduna Abu Bakrah (may Allah be pleased with him), he says: We were sitting with the Noble Prophet (peace and blessings be upon him), and he (peace and blessings be upon him) said: Shall I not inform you about the greatest of the major sins? He (peace and blessings be upon him) said this three times, and that is associating partners with Allah Almighty. The narrator says: The mention of major sins was made in the presence of the Noble Prophet (peace and blessings be upon him), and he (peace and blessings be upon him) said: Associating partners with Allah Almighty and disobedience to parents. He (peace and blessings be upon him) was reclining, then he sat up and began to say: And false testimony, false testimony, false testimony, or he said: False speech and false testimony. He (peace and blessings be upon him) repeated this phrase so many times that we said: Would that he (peace and blessings be upon him) would now remain silent.