Sahih Muslim 1828
صحيح مسلم#1828SahihA'isha is reported to have said that the Messenger of Allah (ﷺ) was asked about the act most pleasing to Allah. He replied:That which is done continuously, even if it is small
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: 6:256