حَدَّثَنَا عَفَّانُ حَدَّثَنَا أَبُو عَوَانَةَ حَدَّثَنَا سُلَيْمَانُ الْأَعْمَشُ عَنْ مُجَاهِدٍ عَنِ ابْنِ عُمَرَ عَنْ النَّبِيِّ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ قَالَ مَنْ اسْتَعَاذَ بِاللَّهِ فَأَعِيذُوهُ وَمَنْ سَأَلَكُمْ بِاللَّهِ فَأَعْطُوهُ وَمَنْ دَعَاكُمْ فَأَجِيبُوهُ وَمَنْ أَتَى إِلَيْكُمْ مَعْرُوفًا فَكَافِئُوهُ فَإِنْ لَمْ تَجِدُوا مَا تُكَافِئُوهُ فَادْعُوا لَهُ حَتَّى تَعْلَمُوا أَنْ قَدْ كَافَأْتُمُوهُ
مسند امام احمد بن حنبل · Hadith 5365
It was narrated from Ibn 'Umar that the Prophet (PBUH) said: "Whoever seeks refuge in the name of Allah, give him refuge. Whoever asks of you in the name of Allah, give to him whoever invites you, accept his invitation. Whoever does you a favour, reward him, and if you do not have anything with which to reward him then pray for him you think your supplication has matched his favour."
Sanad
حَدَّثَنَا عَفَّانُ حَدَّثَنَا أَبُو عَوَانَةَ حَدَّثَنَا سُلَيْمَانُ الْأَعْمَشُ عَنْ مُجَاهِدٍ عَنِ ابْنِ عُمَرَ