Abu Mas'ud Ansari reported that a person from the Ansar who was called Abu Shu'aib had a slave who was a butcher (by profession). He (Abu Mas'ud) saw Messenger of Allah ﷺ and found signs of hunger on his face. He said to the servant: 0 ye, prepare for us food sufficient for five persons, for I intend to invite Allah's Apostle ﷺ who would be the fifth amongst the five. He (the narrator) reported that he then prepared the food and came to Allah's Apostle ﷺ and invited all the five (including him) who was the fifth amongst them to the feast. A man followed him and when Allah's Apostle ﷺ reached the door, he said: This man has followed us;
if you like you may permit him (to join the meal) and if you like he can go back. Thereupon the person said: Allah's Messenger, I permit him.

حَدَّثَنَا قُتَيْبَةُ بْنُ سَعِيدٍ، وَعُثْمَانُ بْنُ أَبِي شَيْبَةَ، - وَتَقَارَبَا فِي اللَّفْظِ - قَالاَ حَدَّثَنَا جَرِيرٌ، عَنِ الأَعْمَشِ، عَنْ أَبِي وَائِلٍ، عَنْ أَبِي مَسْعُودٍ الأَنْصَارِيِّ، قَالَ كَانَ رَجُلٌ مِنَ الأَنْصَارِ يُقَالُ لَهُ أَبُو شُعَيْبٍ وَكَانَ لَهُ غُلاَمٌ لَحَّامٌ فَرَأَى رَسُولَ اللَّهِ ﷺ فَعَرَفَ فِي وَجْهِهِ الْجُوعَ فَقَالَ لِغُلاَمِهِ وَيْحَكَ اصْنَعْ لَنَا طَعَامًا لِخَمْسَةِ نَفَرٍ فَإِنِّي أُرِيدُ أَنْ أَدْعُوَ النَّبِيَّ ﷺ خَامِسَ خَمْسَةٍ . قَالَ فَصَنَعَ ثُمَّ أَتَى النَّبِيَّ ﷺ فَدَعَاهُ خَامِسَ خَمْسَةٍ وَاتَّبَعَهُمْ رَجُلٌ فَلَمَّا بَلَغَ الْبَابَ قَالَ النَّبِيُّ ﷺ " إِنَّ هَذَا اتَّبَعَنَا فَإِنْ شِئْتَ أَنْ تَأْذَنَ لَهُ وَإِنْ شِئْتَ رَجَعَ " . قَالَ لاَ بَلْ آذَنُ لَهُ يَا رَسُولَ اللَّهِ .