Narrated Abu Musa:

The Prophet (ﷺ) said, "A believer to another believer is like a building whose different parts enforce each other." The Prophet (ﷺ) then clasped his hands with the fingers interlaced. (At that time) the Prophet (ﷺ) was sitting and a man came and begged or asked for something. The Prophet (ﷺ) faced us and said, "Help and recommend him and you will receive the reward for it, and Allah will bring about what He will through His Prophet's tongue."

حَدَّثَنَا مُحَمَّدُ بْنُ يُوسُفَ، حَدَّثَنَا سُفْيَانُ، عَنْ أَبِي بُرْدَةَ، بُرَيْدِ بْنِ أَبِي بُرْدَةَ قَالَ أَخْبَرَنِي جَدِّي أَبُو بُرْدَةَ، عَنْ أَبِيهِ أَبِي مُوسَى، عَنِ النَّبِيِّ صلى الله عليه وسلم قَالَ ‏"‏ الْمُؤْمِنُ لِلْمُؤْمِنِ كَالْبُنْيَانِ، يَشُدُّ بَعْضُهُ بَعْضًا ‏"‏‏.‏ ثُمَّ شَبَّكَ بَيْنَ أَصَابِعِهِ‏.‏ وَكَانَ النَّبِيُّ صلى الله عليه وسلم جَالِسًا إِذْ جَاءَ رَجُلٌ يَسْأَلُ أَوْ طَالِبُ حَاجَةٍ أَقْبَلَ عَلَيْنَا بِوَجْهِهِ فَقَالَ ‏"‏ اشْفَعُوا فَلْتُؤْجَرُوا، وَلْيَقْضِ اللَّهُ عَلَى لِسَانِ نَبِيِّهِ مَا شَاءَ ‏"‏‏.‏