حَدَّثَنَا عِيسَى بْنُ عُثْمَانَ بْنِ عِيسَى بْنِ عَبْدِ الرَّحْمَنِ الرَّمْلِيُّ قَالَ: حَدَّثَنَا عَمِّي يَحْيَى بْنُ عِيسَى الرَّمْلِيُّ، عَنِ الْأَعْمَشِ عَنْ أَبِي صَالِحٍ، عَنْ أَبِي هُرَيْرَةَ قَالَ: كَانَ رَسُولُ اللَّهِ صَلَّى اللهُ عَلَيْهِ وَسَلَّمَ يَقُومُ يُصَلِّي حَتَّى تَنْتَفِخَ قَدَمَاهُ فَيُقَالُ لَهُ: يَا رَسُولَ اللَّهِ، تَفْعَلُ هَذَا وَقَدْ غَفَرَ اللَّهُ لَكَ مَا تَقَدَّمَ مِنْ ذَنْبِكَ وَمَا تَأَخَّرَ؟ قَالَ: «أَفَلَا أَكُونُ عَبْدًا شَكُورًا»
It is narrated from Sayyiduna Abu Hurairah, may Allah be pleased with him, that he said: The Messenger of Allah, peace and blessings be upon him, would stand in prayer for such a long time that both of his blessed feet would swell. So it was said to him: You do this (with such hardship) even though Allah Almighty has forgiven all your past and future sins? The Prophet, peace and blessings be upon him, replied: “Should I not be a grateful servant?”