Al-Matalib al-'Aliyah 3263 — Repentance and seeking forgiveness

It is narrated from Sayyiduna Abu Hurayrah and Sayyiduna Abdullah bin Abbas (may Allah be pleased with them) that the Prophet (peace and blessings be upon him) delivered an eloquent sermon to us, in which he (peace and blessings be upon him) said: "The true scholar is only the one who acts according to his knowledge, even if his knowledge is little. Do not ever regard any act of disobedience among sins as trivial and insignificant, even if it appears small in your eyes, for with persistence and continuance no sin remains minor, and with repentance and seeking forgiveness no sin remains major. Be aware! Allah, the Blessed and Exalted, will call you to account for your deeds, even to the extent that one of you will be questioned about touching his brother's garment (without need). And know that every servant will be raised on the Day of Resurrection in the state in which death came to him. Indeed, Allah Almighty has created Paradise and Hell; so whoever chooses the Fire over Paradise, may Allah Almighty distance him from His mercy. Beware! Whatever Allah, the Mighty and Majestic, has forbidden, He has made it completely clear to you, so that 'those who live might live after a clear proof (the truth having become manifest) and those who perish might perish after a clear proof' [Surah al-Anfal: 42]."
Imam al-Harith narrated this report in his Musnad; because of narrators such as Dawud bin al-Muhabbar and Maysarah bin Abd Rabbih in its chain, this narration has been judged severely weak and mawdu' (fabricated).