Sayyiduna Ammar bin Yasir (may Allah be pleased with him) narrates: The Prophet (peace and blessings be upon him) ascended the pulpit and he (peace and blessings be upon him) said: Amin, Amin, Amin! Then he (peace and blessings be upon him) said: "Whoever reaches the month of Ramadan and is not forgiven, may Allah Almighty distance him; say Amin! Whoever reaches his parents, or one of them, and is then not forgiven, may Allah Almighty distance him; say Amin! And the person before whom I am mentioned and who does not send blessings upon me, may Allah Almighty distance him; say Amin."
Al-Tabarani recorded it; its chain contains narrators whom I do not know.
Hadith Referenceمجمع الزوائد ومنبع الفوائد / كتاب الأدعية / 17311