إذا اكفر الرجل أخاه فقد باء بها أحدهما
(صحيح) … [م] عن ابن عمر.
Nafi ‘narrated from the words of Ibn’ Umar that the Prophet (peace and blessings of Allaah be upon him) said:
“If a man accuses his brother of unbelief, then one of them is such (i.e., a Kafir). ” This hadith was narrated by Muslim 60.
Sheikh al-Albani called the hadith authentic. See Saheeh al-jami ‘as-saghir 377.
Grade: صحيح
Khadeeja