Sahih Muslim , Book 32, Hadith 6190 (USC-MSA) ⓘ
Abu Huraira reported Allah's Messenger 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.
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 " .
also referenced under: Book 45, Hadith 11 (In-Book) & Hadith 2551 (Reference)