وَعَنْ عَلِيٍّ رَضِيَ اللَّهُ عَنْهُ قَالَ: اسْتَأْذَنَ عَمَّارٌ عَلَى النَّبِيِّ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ فَقَالَ: «ائْذَنُوا لَهُ مَرْحَبًا بِالطَّيِّبِ الْمُطَيَّبِ» . رَوَاهُ التِّرْمِذِيّ
`Ali told that when `Ammar asked permission to come in to see the Prophet he said, "Let him come in. Welcome to the very good man!" Tirmidhi transmitted it.