I heard the Prophet ﷺ saying, "Whoever claims to be the son of a person other than his father, and he knows that person is not his father, then Paradise will be forbidden for him." I mentioned that to Abu Bakra, and he said, "My ears heard that and my heart memorized it from Messenger of Allah ﷺ.  

سَمِعْتُ النَّبِيَّ ﷺ يَقُولُ مَنِ ادَّعَى إِلَى غَيْرِ أَبِيهِ وَهْوَ يَعْلَمُ أَنَّهُ غَيْرُ أَبِيهِ فَالْجَنَّةُ عَلَيْهِ حَرَامٌ فَذَكَرْتُهُ لأَبِي بَكْرَةَ فَقَالَ وَأَنَا سَمِعَتْهُ أُذُنَاىَ وَوَعَاهُ قَلْبِي مِنْ رَسُولِ اللَّهِ ﷺ  

Both of my ears heard the Messenger of Allah saying this: He who claimed the fatherhood of anyone else besides his real father knowingly (committed a great sin) ;Paradise is forbidden to him. Abu Bakra asserted that he too heard it from the Messenger of Allah (may peace be upon him ).  

لَمَّا ادُّعِيَ زِيَادٌ لَقِيتُ أَبَا بَكْرَةَ فَقُلْتُ لَهُ مَا هَذَا الَّذِي صَنَعْتُمْ إِنِّي سَمِعْتُ سَعْدَ بْنَ أَبِي وَقَّاصٍ يَقُولُ سَمِعَ أُذُنَاىَ مِنْ رَسُولِ اللَّهِ ﷺ وَهُوَ يَقُولُ مَنِ ادَّعَى أَبًا فِي الإِسْلاَمِ غَيْرَ أَبِيهِ يَعْلَمُ أَنَّهُ غَيْرُ أَبِيهِ فَالْجَنَّةُ عَلَيْهِ حَرَامٌ فَقَالَ أَبُو بَكْرَةَ وَأَنَا سَمِعْتُهُ مِنْ رَسُولِ اللَّهِ ﷺ  

My ears heard and my hearing preserved it that Muhammad (peace and blessings be upon him) observed: He who claimed for another one his fatherhood besides his own father knowingly that he was not his father-to him Paradise is forbidden.  

عَنْ سَعْدٍ وَأَبِي بَكْرَةَ كِلاَهُمَا يَقُولُ سَمِعَتْهُ أُذُنَاىَ وَوَعَاهُ قَلْبِي مُحَمَّدًا ﷺ يَقُولُ مَنِ ادَّعَى إِلَى غَيْرِ أَبِيهِ وَهُوَ يَعْلَمُ أَنَّهُ غَيْرُ أَبِيهِ فَالْجَنَّةُ عَلَيْهِ حَرَامٌ  

“I heard Sa'd and Abu Bakrah both say that they heard directly from Muhammad ﷺ saying it and memorized: 'Whoever claims to belong to someone other than his father knowing the he is not his father, Paradise will be forbidden to him.”  

سَمِعْتُ سَعْدًا وَأَبَا بَكْرَةَ وَكُلُّ وَاحِدٍ مِنْهُمَا يَقُولُ سَمِعَتْ أُذُنَاىَ وَوَعَى قَلْبِي مُحَمَّدًا ﷺ يَقُولُ مَنِ ادَّعَى إِلَى غَيْرِ أَبِيهِ وَهُوَ يَعْلَمُ أَنَّهُ غَيْرُ أَبِيهِ فَالْجَنَّةُ عَلَيْهِ حَرَامٌ  

[Machine] I heard Saad say that he heard it from the Prophet Muhammad ﷺ that whoever claims to be someone's father without being their biological father, while knowing that he is not their father, then Paradise is forbidden for him. I met Abu Bakr and spoke to him about it, and he said, "I also heard it with my own ears and it settled in my heart from Muhammad ﷺ ."  

سَمِعْتُ سَعْدًا يَقُولُ سَمِعَتْهُ أُذُنَايَ وَوَعَاهُ قَلْبِي مِنْ مُحَمَّدٍ ﷺ أَنَّهُ مَنِ ادَّعَى أَبًا غَيْرَ أَبِيهِ وَهُوَ يَعْلَمُ أَنَّهُ غَيْرُ أَبِيهِ فَالْجَنَّةُ عَلَيْهِ حَرَامٌ قَالَ فَلَقِيتُ أَبَا بَكْرَةَ فَحَدَّثْتُهُ فَقَالَ وَأَنَا سَمِعَتْهُ أُذُنَايَ وَوَعَاهُ قَلْبِي مِنْ مُحَمَّدٍ ﷺ  

[Machine] I heard with my ears and my heart was aware from Muhammad ﷺ that whoever claims to be the child of someone other than his father, knowing that he is not his father, then Paradise is forbidden for him. So I met Abu Bakr and told him, and he said, "And I also heard with my ears and my heart was aware from Muhammad ﷺ ."  

سَمِعَتِ أذُنَايَ وَوَعَى قَلْبِي مِنْ مُحَمَّدٍ ﷺ أَنَّهُ مَنِ ادَّعَى إِلَى غَيْرِ أَبِيهِ وَهُوَ يَعْلَمُ أَنَّهُ غَيْرُ أَبِيهِ فَالْجَنَّةُ عَلَيْهِ حَرَامٌ قَالَ فَلَقِيتُ أَبَا بَكْرَةَ فَحَدَّثْتُهُ فَقَالَ وَأَنَا سَمِعَتْ أُذُنَايَ وَوَعَى قَلْبِي مِنْ مُحَمَّدٍ ﷺ  

Both of my ears heard the Messenger of Allah saying this: He who claimed the fatherhood of anyone else besides his real father knowingly (committed a great sin) ;Paradise is forbidden to him. Abu Bakra asserted that he too heard it from the Messenger of Allah (may peace be upon him ). (Using translation from Muslim 63a)  

لَمَّا ادُّعِيَ زِيَادٌ لَقِيتُ أَبَا بَكْرَةَ قَالَ فَقُلْتُ مَا هَذَا الَّذِي صَنَعْتُمْ؟ إِنِّي سَمِعْتُ سَعْدَ بْنَ أَبِي وَقَّاصٍ يَقُولُ سَمِعَ أُذُنِي مِنْ رَسُولِ اللهِ ﷺ وَهُوَ يَقُولُ مَنِ ادَّعَى أَبًا فِي الْإِسْلامِ غَيْرَ أَبِيهِ وَهُوَ يَعْلَمُ أَنَّهُ غَيْرُ أَبِيهِ فَالْجَنَّةُ عَلَيْهِ حَرَامٌ فَقَالَ أَبُو بَكْرَةَ وَأَنَا سَمِعْتُهُ مِنْ رَسُولِ اللهِ ﷺ  

I heard the Prophet ﷺ saying, "Whoever claims to be the son of a person other than his father, and he knows that person is not his father, then Paradise will be forbidden for him." I mentioned that to Abu Bakra, and he said, "My ears heard that and my heart memorized it from Messenger of Allah ﷺ. (Using translation from Bukhārī 6766)   

أَنَّ رَسُولَ اللهِ ﷺ قَالَ مَنِ ادُّعِيَ إِلَى غَيْرِ أَبِيهِ وَهُوَ يَعْلَمُ أَنَّهُ غَيْرُ أَبِيهِ فَالْجَنَّةُ عَلَيْهِ حَرَامٌ قَالَ فَذَكَرْتُ ذَلِكَ لِأَبِي بَكْرَةَ فَقَالَ سَمِعَتْهُ أُذُنَايَ وَوَعَاهُ قَلْبِي  

"من ادُّعِى إِلَى غَيرِ أَبِيهِ وَهُوَ يَعْلمُ أَنَّهُ غيرُ أَبِيه، فَالْجنَّة علَيهِ حرامٌ".