عَنْ عَبْدِ اللَّهِ بنِ مَسْعُودٍ رضي الله عنه أَنَّ النَّبِيَّ صَلَّى اللهُ عَلَيْهِ وَسَلَّمَ قَالَ:
«سِبَابُ المُسْلِمِ فُسُوقٌ، وَقِتَالُهُ كُفْرٌ».
المزيد
‘Abdullah ibn Mas‘ūd (may Allah be pleased with him) reported that the Prophet (may Allah's peace and blessings be upon him) said:
"Reviling a Muslim is Fusūq (deobedience) and fighting him is Kufr (disbelief)."