The Prophet ﷺ climbed the pulpit and said, "Amen, amen, amen."He was asked, "Messenger of Allah, you did not used to do this."He replied, "Jibreel said to me, 'May the nose of a servant be rubbed in dust who reaches his parents, or one of them, in old age and does not enter Paradise.' I said, 'Amen.' Then he said, 'May the nose of a servant be rubbed in dust upon whom Ramadan enters and he is not forgiven.' I said, 'Amen.' Then he said, 'May the nose of a man be rubbed in dust before whom you are mentioned and he does not send blessings upon you.' I said, 'Amen.'"
أن النبي ﷺ رقى المنبر فقال: آمين، آمين، آمين، قيل له: يا رسول الله ما كنت تصنع هذا؟ فقال: قال لي جبريل: رغم أنف عبد أدرك أبويه أو أحدهما لم يدخله الجنة، قلت: آمين، ثم قال: رغم أنف عبد دخل عليه رمضان لم يغفر له، فقلت: آمين. ثم قال: رغم أنف امرئ ذكرت عنده فلم يصل عليك، فقلت: آمين.
Bukhari related it in Adab al-Mufrad (646), and Ibn Khuzayma graded it sahih (1888), both by way of Kathir bin Zayd, from Walid bin Rabah, from Abu Hurairah, and he related it. Its isnad is hasan because of Walid bin Rabah, who is Dawsi Madani, and Kathir bin Zayd, who is Aslami Madani, for both of them produce hasan hadiths.Abu Yaala related it (5922), and from him Ibn Hibban (907), from the hadith of Abu Muamar Hudhali (who is Ismail bin Ibrahim bin Muamar), from Hafs bin Ghiyath, from Muhammad bin Amr, from Abu Salama, from Abu Hurairah, and he related something similar. This isnad is also hasan because of Muhammad bin Amr, who is Ibn Alqama Laythi, for he produces hasan hadiths.Muslim related it in the Book of Piety and Kinship Ties (2551), by way of Suhayl, from his father, from Abu Hurairah, but confined to the portion about parents.