Sayyidina Abu Bakrah (RA) reported that Allah’s Messenger (SAW) said, “Shall I not inform you of the greatest of the grave sins?” They said, “Of course, O Messenger of Allah, (SAW). “He said, “To associate partner with Allah, to disobey (and displease) parents, and to give false testimony, or to speak lies”. And he did not cease to say that till they said, “Would that he stopped”.
[Bukhari 6273]
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