حَدَّثَنَا قُتَيْبَةُ، حَدَّثَنَا نُوحُ بْنُ قَيْسٍ، عَنْ أَبِي هَارُونَ الْعَبْدِيِّ، عَنْ أَبِي سَعِيدٍ الْخُدْرِيِّ، عَنِ النَّبِيِّ صلى الله عليه وسلم قَالَ ‏"‏ يَأْتِيكُمْ رِجَالٌ مِنْ قِبَلِ الْمَشْرِقِ يَتَعَلَّمُونَ فَإِذَا جَاءُوكُمْ فَاسْتَوْصُوا بِهِمْ خَيْرًا ‏"‏ ‏.‏ قَالَ فَكَانَ أَبُو سَعِيدٍ إِذَا رَآنَا قَالَ مَرْحَبًا بِوَصِيَّةِ رَسُولِ اللَّهِ صلى الله عليه وسلم ‏.‏ قَالَ هَذَا حَدِيثٌ لاَ نَعْرِفُهُ إِلاَّ مِنْ حَدِيثِ أَبِي هَارُونَ عَنْ أَبِي سَعِيدٍ الْخُدْرِيِّ ‏.‏

Narrated Abu Harun [Al-'Abdi]: from Abu Sa'eed Al-Khudri that the Prophet (PBUH) said: "Men will come to you from the direction of the east to learn. So when they come to you then exhort them to good." He said: "When Abu Sa'eed saw us he would say: 'Welcome with the exhortation of the Messenger of Allah, may the peace and blessings of Allah be upon him and his family.'" Translation Not Available

Book Ref: Jamiya Tirmidhi Book 41 Hadith 2651
Web Ref:  Jamiya Tirmidhi Vol 5 Book 39 Hadith 2651