The Prophet (ﷺ) urged the people (mission) of 'Abdul Qais to memorize the faith and the (religious) knowledge (as he explained to them) and to inform (convey) to their people whom they left behind (at home)

Sahih al-Bukhari · Book 3 · Hadith 87

حَدَّثَنَا مُحَمَّدُ بْنُ بَشَّارٍ، قَالَ حَدَّثَنَا غُنْدَرٌ، قَالَ حَدَّثَنَا شُعْبَةُ، عَنْ أَبِي جَمْرَةَ، قَالَ كُنْتُ أُتَرْجِمُ بَيْنَ ابْنِ عَبَّاسٍ وَبَيْنَ النَّاسِ فَقَالَ إِنَّ وَفْدَ عَبْدِ الْقَيْسِ أَتَوُا النَّبِيَّ صلى الله عليه وسلم فَقَالَ ‏"‏ مَنِ الْوَفْدُ ـ أَوْ مَنِ الْقَوْمُ ‏"‏‏.‏ قَالُوا رَبِيعَةُ‏.‏ فَقَالَ ‏"‏ مَرْحَبًا بِالْقَوْم…

Narrated Abu Jamra: I was an interpreter between the people and Ibn `Abbas. Once Ibn `Abbas said that a delegation of the tribe of `Abdul Qais came to the Prophet (ﷺ) who asked them, "Who are the people (i.e. you)? (Or)…