Sahih Muslim 1863
صحيح مسلم#1863SahihThis hadith has been reported with the same chain of transmitters by Qatada except with this change:" He who finds it hard (to recite the Qur'an) will have a double reward
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: 6:291