I set out along with Jabrir b. 'Abdullah al-Bajali on a journey and he used to serve me. I said to him: Don't do that. Thereupon he said: I have seen Ansar doing this with Messenger of Allah ﷺ. I swore by Allah whenever I accompany any one of the Ansar, I would serve him and Ibn Muthanni, and Ibn Bashshir made this addition in their narrations: Jarir was older than Anas, and Ibn Bashshir said: He was of a more advanced age as compared with Anas. Allah's Apostle ﷺ invoked blessings for the tribes of Ghifar and Aslam.  

إِنِّي قَدْ رَأَيْتُ الأَنْصَارَ تَصْنَعُ بِرَسُولِ اللَّهِ ﷺ شَيْئًا آلَيْتُ أَنْ لاَ أَصْحَبَ أَحَدًا مِنْهُمْ إِلاَّ خَدَمْتُهُ زَادَ ابْنُ الْمُثَنَّى وَابْنُ بَشَّارٍ فِي حَدِيثِهِمَا وَكَانَ جَرِيرٌ أَكْبَرَ مِنْ أَنَسٍ وَقَالَ ابْنُ بَشَّارٍ أَسَنَّ مِنْ أَنَسٍ