Riyad as-SalihinChapter 17Hadith 1123
Full Sharh — Riyad as-Salihin 1123
عن سعد بن أبي وقاص رضي الله عنه أن النبي صلى الله عليه وسلم قال: "من ادعى إلى غير أبيه وهو يعلم أنه غير أبيه، فالجنة عليه حرام" ((متفق عليه)).
English Translation
Sa'd bin Abu Waqqas (May Allah be pleased with him) said:: The Prophet (ﷺ) said, "He who (falsely) attributes his fatherhood to anyone besides his real father, knowing that he is not his father, will be forbidden to enter Jannah.".
Source
Riyad as-Salihin(رياض الصالحين)
The Book of the Prohibited actions
Hadith Number
1123