Sahih Muslim 6546
صحيح مسلم#6546SahihAbu Huraira reported it as a marfu' hadith (and the words are):The deeds are presented on every Thursday and Monday and Allah, the Exalted and Glorious. grants pardon to every person who does not associate anything with Allah except the person in whose (heart) there is rancour against his brother. It would be said: Put both of them off until they are reconciled
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Every narration in Sahih Muslim is accepted as Sahih (authentic) by the established status of the book.
In-book reference: 45:44