Sahih Muslim 7534
صحيح مسلم#7534SahihA'isha reported in connection with the words of Allah, the Exalted:" He who is rich should abstain, and he who is poor may reasonably eat (out of it)" that this was revealed in relation to the guardian of an orphan who is poor; he may get out of that what is reasonable keeping in view his own status of solvency
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: 56:12