Mukhtasar Bukhari (Abridged) 1176 — What is said about false

Narrated from Sayyiduna Abu Bakrah (may Allah be pleased with him) that the Noble Prophet (peace and blessings of Allah be upon him) said: "Shall I not inform you of the greatest of the major sins?" The companions said, "Yes, O Messenger of Allah! (Please do tell us)." He (peace and blessings of Allah be upon him) said: "Associating partners with Allah. Disobedience to parents." At that time, he (peace and blessings of Allah be upon him) was reclining, but then he sat up and said: "Beware! Giving false testimony." He (peace and blessings of Allah be upon him) kept repeating this so much that we wished he would stop.