Qays bin Ubad said: I said to Ammar (may Allah be pleased with him): How do you regard what you did in the matter of Ali (may Allah be pleased with him)? Was it your own opinion, or a covenant from the Prophet (peace and blessings be upon him)? He said: The Prophet (peace and blessings be upon him) did not entrust us with any special covenant; his (peace and blessings be upon him) covenant was for everyone. But Hudhayfah (may Allah be pleased with him) narrated a hadith to me from the Prophet (peace and blessings be upon him), that he (peace and blessings be upon him) said: "Among my companions there will be 12 hypocrites; 8 of them will not enter Paradise until the camel passes through the eye of the needle, "until the camel passes through the eye of the needle" [Surah al-A'raf: 40], and for those eight, great calamities will suffice." And what Shu'bah said about the remaining 4, I do not remember.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب المرتد / 16836