The Supplication of the Tashahhud - Section 3 Mishkat al-Masabih 958

Arabic hadith text
وَعَنْ سَمُرَةَ قَالَ: أَمَرَنَا رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ أَنْ نَرُدَّ عَلَى الْإِمَامِ وَنَتَحَابَّ وَأَنْ يُسَلِّمَ بَعْضُنَا عَلَى بَعْضٍ. رَوَاهُ أَبُو دَاوُد
Translation

Samura said, “God’s Messenger commanded us to respond to the imam, to love one another, and to salute one another.” Abu Dawud transmitted it.