Narrated AbuDharr and AbuHurayrah:

The Messenger of Allah (ﷺ) used to sit among his Companions. A stranger would come and not recognize him (the Prophet) until he asked (about him). So we asked the Messenger of Allah (ﷺ) to make a place where he might take his seat so that when a stranger came, he might recognise him. So we built a terrace of soil on which he would take his seat, and we would sit beside him. He then mentioned something similar to this Hadith saying: A man came, and he described his appearance. He saluted from the side of the assembly, saying: Peace be upon you, Muhammad. The Prophet (ﷺ) then responded to him.

حَدَّثَنَا عُثْمَانُ بْنُ أَبِي شَيْبَةَ، حَدَّثَنَا جَرِيرٌ، عَنْ أَبِي فَرْوَةَ الْهَمْدَانِيِّ، عَنْ أَبِي زُرْعَةَ بْنِ عَمْرِو بْنِ جَرِيرٍ، عَنْ أَبِي ذَرٍّ، وَأَبِي، هُرَيْرَةَ قَالاَ كَانَ رَسُولُ اللَّهِ صلى الله عليه وسلم يَجْلِسُ بَيْنَ ظَهْرَىْ أَصْحَابِهِ فَيَجِيءُ الْغَرِيبُ فَلاَ يَدْرِي أَيُّهُمْ هُوَ حَتَّى يَسْأَلَ فَطَلَبْنَا إِلَى رَسُولِ اللَّهِ صلى الله عليه وسلم أَنْ نَجْعَلَ لَهُ مَجْلِسًا يَعْرِفُهُ الْغَرِيبُ إِذَا أَتَاهُ - قَالَ - فَبَنَيْنَا لَهُ دُكَّانًا مِنْ طِينٍ فَجَلَسَ عَلَيْهِ وَكُنَّا نَجْلِسُ بِجَنْبَتَيْهِ وَذَكَرَ نَحْوَ هَذَا الْخَبَرِ فَأَقْبَلَ رَجُلٌ فَذَكَرَ هَيْئَتَهُ حَتَّى سَلَّمَ مِنْ طَرْفِ السِّمَاطِ فَقَالَ السَّلاَمُ عَلَيْكَ يَا مُحَمَّدُ ‏.‏ قَالَ فَرَدَّ عَلَيْهِ النَّبِيُّ صلى الله عليه وسلم ‏.‏