Sunan Ibn Majah 3685
It was narrated from Anas bin Malik that the Messenger of Allah(ﷺ) said:
"On the Day of Resurrection, people will be lined up in rows, (one of the narrators) Ibn NUmair said: i.e., the people of Paradise, and a man from among the people of Hell will pass by a man (from the people of Paradise) and say: 'O so and so! Do you not remember the day when you asked for water and I gave you water to drink?" So he will intercede for him. And another man will come and say: " Do you not remember the day when I gave you water with which to purify yourself?" and he will intercede for him." (In his narration, one of the narrators) Ibn NUmair said: "And he will remember the day when you sent me to do such and such for you, and I went and did it for you?' and he will intercede for him."  "
حَدَّثَنَا مُحَمَّدُ بْنُ عَبْدِ اللَّهِ بْنِ نُمَيْرٍ، وَعَلِيُّ بْنُ مُحَمَّدٍ، قَالاَ حَدَّثَنَا وَكِيعٌ، عَنِ الأَعْمَشِ، عَنْ يَزِيدَ الرَّقَاشِيِّ، عَنْ أَنَسِ بْنِ مَالِكٍ، قَالَ قَالَ رَسُولُ اللَّهِ ـ صلى الله عليه وسلم ـ ‏"‏ يَصُفُّ النَّاسُ يَوْمَ الْقِيَامَةِ صُفُوفًا - وَقَالَ ابْنُ نُمَيْرٍ أَهْلُ الْجَنَّةِ - فَيَمُرُّ الرَّجُلُ مِنْ أَهْلِ النَّارِ عَلَى الرَّجُلِ فَيَقُولُ يَا فُلاَنُ أَمَا تَذْكُرُ يَوْمَ اسْتَسْقَيْتَ فَسَقَيْتُكَ شَرْبَةً قَالَ فَيَشْفَعُ لَهُ وَيَمُرُّ الرَّجُلُ فَيَقُولُ أَمَا تَذْكُرُ يَوْمَ نَاوَلْتُكَ طَهُورًا فَيَشْفَعُ لَهُ ‏"‏ ‏.‏ قَالَ ابْنُ نُمَيْرٍ ‏"‏ وَيَقُولُ يَا فُلاَنُ أَمَا تَذْكُرُ يَوْمَ بَعَثْتَنِي فِي حَاجَةِ كَذَا وَكَذَا فَذَهَبْتُ لَكَ فَيَشْفَعُ لَهُ ‏"‏ ‏.‏