Musannaf Ibn Abi Shaybah 32435 — Book of Faith

Yahya bin Abi Amr al-Saybani (may Allah have mercy on him) said that Sayyiduna Hudhayfah (may Allah be pleased with him) said: I know of two groups of the religion, and the people of both these groups will be in Hell. One group says: Faith is a matter of speech, not of deeds, even if one kills and even if one commits fornication. And another group says: Those before us (the narrator said: I think he (may Allah be pleased with him) mentioned a word here which has slipped from me) used to command us to perform five prayers in the whole day, whereas they are only two prayers: the Isha prayer and the Fajr prayer.