"I heard Al-Mughirah bin Shu'bah say: 'The Prophet (ﷺ) stood (in prayer at night) until his feet swelled up, and it was said to him: Allah has forgiven your past and future sins. He said: "Should I not be a thankful slave?'"
Reference: Sunan an-Nasa'i 1644 In-book : Book 20, Hadith 47 English translation : Vol. 2, Book 20, Hadith 1645
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