Sahih Muslim , Book 4, Hadith 2011 (USC-MSA) ⓘ

'Abdullah b. 'Umar reported: While we were sitting with the Messenger of Allah, a person, one of the Ansar, came to him and greeted him. The Ansari then turned back. Upon this the Messenger of Allah said: o brother of Ansar, how is my brother Sa'd be 'Ubada? He said: He is better. The Messenger of Allah said: Who amongst you would visit him? He (the Holy Prophet) stood up and we also got up along with him, and we were more than ten persons. We had neither shoes with us, nor socks, nor caps, nor shirts. We walked on the barren land till we came to him. The people around him kept away till the Messenger of Allah and his Companions with him came near him (Sa'd b. 'Ubada).

وَحَدَّثَنَا مُحَمَّدُ بْنُ الْمُثَنَّى الْعَنَزِيُّ، حَدَّثَنَا مُحَمَّدُ بْنُ جَهْضَمٍ، حَدَّثَنَا إِسْمَاعِيلُ، - وَهُوَ ابْنُ جَعْفَرٍ - عَنْ عُمَارَةَ، - يَعْنِي ابْنَ غَزِيَّةَ - عَنْ سَعِيدِ بْنِ الْحَارِثِ بْنِ الْمُعَلَّى، عَنْ عَبْدِ اللَّهِ بْنِ عُمَرَ، أَنَّهُ قَالَ كُنَّا جُلُوسًا مَعَ رَسُولِ اللَّهِ صلى الله عليه وسلم إِذْ جَاءَهُ رَجُلٌ مِنَ الأَنْصَارِ فَسَلَّمَ عَلَيْهِ ثُمَّ أَدْبَرَ الأَنْصَارِيُّ فَقَالَ رَسُولُ اللَّهِ صلى الله عليه وسلم ‏"‏ يَا أَخَا الأَنْصَارِ كَيْفَ أَخِي سَعْدُ بْنُ عُبَادَةَ ‏"‏ ‏.‏ فَقَالَ صَالِحٌ ‏.‏ فَقَالَ رَسُولُ اللَّهِ صلى الله عليه وسلم ‏"‏ مَنْ يَعُودُهُ مِنْكُمْ ‏"‏ ‏.‏ فَقَامَ وَقُمْنَا مَعَهُ وَنَحْنُ بِضْعَةَ عَشَرَ مَا عَلَيْنَا نِعَالٌ وَلاَ خِفَافٌ وَلاَ قَلاَنِسُ وَلاَ قُمُصٌ نَمْشِي فِي تِلْكَ السِّبَاخِ حَتَّى جِئْنَاهُ فَاسْتَأْخَرَ قَوْمُهُ مِنْ حَوْلِهِ حَتَّى دَنَا رَسُولُ اللَّهِ صلى الله عليه وسلم وَأَصْحَابُهُ الَّذِينَ مَعَهُ ‏.‏