وعن أبي ذر رضي الله عنه أنه سمع
رسول الله صلى الله عليه وسلم يقول: «ليس من رجل ادعى لغير أبيه وهو يعلمه إلا كفر، ومن ادعى ما ليس له، فليس منا، وليتبوأ مقعده من النار، ومن دعا رجلاً بالكفر، أو قال: عدو الله، وليس كذلك إلا حار عليه»
I heard the Messenger of Allah (sallallahu alayhi wa sallam) saying: “A person who attributes his fatherhood to anyone other than his real father, knowing that he is not his father, commits an act of disbelief. And he who makes a claim of anything which in fact does not belong to him, is none of us. He should make his abode in Hell, and he who labels anyone as disbeliever or calls him the enemy of Allah and he is in fact not so, his charge will revert to him.”.
Riyad as-Salihin 1805, Book 18, The Book of the Prohibited actions, Hadith 295. 1 min read