حَدَّثَنَا أَبُو نُعَيْمٍ، قَالَ حَدَّثَنَا مِسْعَرٌ، عَنْ زِيَادٍ، قَالَ سَمِعْتُ الْمُغِيرَةَ ـ رضى الله عنه ـ يَقُولُ إِنْ كَانَ النَّبِيُّ صلى الله عليه وسلم لَيَقُومُ لِيُصَلِّيَ حَتَّى تَرِمُ قَدَمَاهُ أَوْ سَاقَاهُ، فَيُقَالُ لَهُ فَيَقُولُ ‏"‏ أَفَلاَ أَكُونُ عَبْدًا شَكُورًا ‏"‏‏.‏
Translation
Narrated Al-Mughira

The Prophet (ﷺ) used to stand (in the prayer) or pray till both his feet or legs swelled. He was asked why (he offered such an unbearable prayer) and he said, "should I not be a thankful slave."

Comment

Prayer at Night (Tahajjud)

Sahih al-Bukhari 1130

Excellence of Night Prayer

This narration demonstrates the Prophet's immense devotion to night prayers, standing so long that his blessed feet swelled. This physical manifestation of worship shows the intensity of his connection with Allah.

Spirit of Gratitude

The Prophet's response "should I not be a thankful slave" reveals that his prolonged worship stemmed from profound gratitude to Allah. True thankfulness is expressed not merely in words but through devoted action and worship.

Balance in Worship

While this shows the highest level of devotion, scholars note that the Prophet's example also teaches moderation. He prohibited excess that leads to harm, indicating this was his personal practice while encouraging balanced worship for his community.

Spiritual Aspiration

This hadith inspires believers to increase their voluntary prayers, particularly Tahajjud, as a means of drawing closer to Allah and expressing genuine thankfulness for His countless blessings.