Chapter: Refraining from doing things Allah has made illegal
Narrated Al-Mughira bin Shu`ba:The Prophet (ﷺ) used to pray so much that his feet used to become edematous or swollen, and when he was asked as to why he prays so much, he would say, "Shall I not be a thankful slave (to Allah)?"
Reference
Sahih al-Bukhari 6471
In-book reference
Book 81, Hadith 60
USC-MSA web (English)
Vol. 8, Book 76, Hadith 478
Translation by Dr. M. Muhsin Khan · Language: EN
Sahih
Arabic Text
حَدَّثَنَا خَلاَّدُ بْنُ يَحْيَى، حَدَّثَنَا مِسْعَرٌ، حَدَّثَنَا زِيَادُ بْنُ عِلاَقَةَ، قَالَ سَمِعْتُ الْمُغِيرَةَ بْنَ شُعْبَةَ، يَقُولُ كَانَ النَّبِيُّ صلى الله عليه وسلم يُصَلِّي حَتَّى تَرِمَ ـ أَوْ تَنْتَفِخَ ـ قَدَمَاهُ فَيُقَالُ لَهُ، فَيَقُولُ " أَفَلاَ أَكُونُ عَبْدًا شَكُورًا ".