The Book of Virtue, Enjoining Good Manners, and Joining of the Ties of Kinship
حَدَّثَنَا زُهَيْرُ بْنُ حَرْبٍ، حَدَّثَنَا جَرِيرٌ، عَنْ سُهَيْلٍ، عَنْ أَبِيهِ، عَنْ أَبِي هُرَيْرَةَ، قَالَ قَالَ رَسُولُ اللَّهِ صلى الله عليه وسلم " رَغِمَ أَنْفُهُ ثُمَّ رَغِمَ أَنْفُهُ ثُمَّ رَغِمَ أَنْفُهُ " . قِيلَ مَنْ يَا رَسُولَ اللَّهِ قَالَ " مَنْ أَدْرَكَ وَالِدَيْهِ عِنْدَ الْكِبَرِ أَحَدَهُمَا أَوْ كِلَيْهِمَا ثُمَّ لَمْ يَدْخُلِ الْجَنَّةَ " .Abu Huraira reported Allah's Messenger (ﷺ) as saying:Let him be humbled, let him be humbled. It was said: Allah's Messenger, who is he? He said. He who finds his parents in old age, either one or both of them, and does not enter Paradise
From Sahih Muslim, whose reports the scholars accept as authentic.