حَدَّثَنَا مُحَمَّدُ بْنُ بَشَّارٍ، قَالَ حَدَّثَنَا عَبْدُ الرَّحْمَنِ بْنُ مَهْدِيٍّ، قَالَ حَدَّثَنَا سُفْيَانُ، عَنْ أَبِي إِسْحَاقَ، عَنْ هَانِىءِ بْنِ هَانِىءٍ، عَنْ عَلِيٍّ، قَالَ جَاءَ عَمَّارٌ يَسْتَأْذِنُ عَلَى النَّبِيِّ صلى الله عليه وسلم فَقَالَ ‏"‏ ائْذَنُوا لَهُ مَرْحَبًا بِالطَّيِّبِ الْمُطَيَّبِ ‏"‏ ‏.‏ هَذَا حَدِيثٌ حَسَنٌ صَحِيحٌ ‏.‏
Translation
Narrated Mahmud bin Ghailan

To us (saying): Waki' narrated to us (saying): Sufyan reported to us from 'Abdul-Malik bin 'Umair, from a freed slave of Rib'i bin Hirash, from Hudhaifah who said: "We were sitting with the Prophet SAW and he said: "I do not know how long I will be with you, so stick to the two after me,' and he signaled towards Abu Bakr and 'Umar- 'And act upon the guidance of 'Ammar, and whatever Ibn Mas'ud reports to you, then believe him.'"