Musnad Abu Ya'la al-Mawsili 161:36

Ibrahim ibn Muhammad ibn ‘Ar‘arah narrated to us, ‘Abd al-Razzaq narrated to us, Ma‘mar informed us, from Suhayl, from his father, from Abu Hurayrah, who said: The Messenger of Allah (may Allah bless him and grant him peace) said: "The gates of Paradise are opened every Monday and Thursday." Suhayl said in his narration: "Then Allah forgives every servant who does not associate anything with Allah, except for those who have enmity between them. Allah, the Mighty and Majestic, says to His angels: 'Leave them until they reconcile.'" Ma‘mar said: "And someone other than Suhayl said: 'And the deeds are presented every Monday and Thursday.'"