Humiliated If Exit from Ramadhan But Sins Not Forgiven

صعِد رسولُ اللهِ صلَّى اللهُ عليه وسلَّم المنبرَ فلمَّا رقِي عَتبةً قال: ( آمينَ ) ثمَّ رقي عتبةً أخرى فقال: ( آمينَ ) ثمَّ رقي عتبةً ثالثةً فقال: ( آمينَ ) ثمَّ قال: ( أتاني جبريلُ فقال: يا محمَّدُ *مَن أدرَك رمضانَ فلم يُغفَرْ له فأبعَده اللهُ* قُلْتُ: آمينَ قال: ومَن أدرَك والديه أو أحدَهما فدخَل النَّارَ فأبعَده اللهُ قُلْتُ: آمينَ فقال: ومَن ذُكِرْتَ عندَه فلم يُصَلِّ عليكَ فأبعَده اللهُ، قُلْ: آمينَ، فقُلْتُ: آمينَ )

The Messenger of Allah, may Allah's prayers and peace be upon him, ascended the pulpit, and when he ascended a threshold he said: (Amen), then he climbed another threshold and said: (Amen), then he climbed a third threshold and said: (Amen) and then said: (Gabriel came to me and said: O Muhammad, 

*whoever enters Ramadan yet has not been forgiven, Allah will keep him away (humiliated)*, I said: Amen. He said: And whoever finds his parents or one of them, but still enter the Hellfire, so Allah will keep him away (humiliated). I said: Amen. He said: And whoever my name is mentioned to him but did not send peace and blessing to you, so Allah kept him away (humiliated). Say: Amen, and I said: Amen)

Sahih Ibn Hibban

https://dorar.net/h/Bixp6u5B

Other sources:

https://sunnah.com/tirmidhi:3545