Hadith 1559

Ibn Mas'ud (May Allah be pleased with him) reported: The Messenger of Allah (PBUH) said, "Reviling a Muslim is Fusuq (disobedience of Allah) and killing him is (tantamount to) disbelief."

[Al-Bukhari and Muslim].

- وعن ابن مسعود رضي الله عنه قال‏:‏ قال رسول الله صلى الله عليه وسلم ‏:‏ ‏"‏سباب المسلم فسوق، وقتاله كفر‏"‏ ‏(‏‏(‏متفق عليه‏)‏‏)‏‏.‏

Reference: 1715490
In-book reference: Book 17, Hadith 1559