Hadith
حَدَّثَنَا عَمْرُو بْنُ عَاصِمٍ، حَدَّثَنَا هَمَّامٌ، عَنْ قَتَادَةَ، قَالَ قُلْتُ لأَنَسٍ أَكَانَتِ الْمُصَافَحَةُ فِي أَصْحَابِ النَّبِيِّ صلى الله عليه وسلم قَالَ نَعَمْ.
Narrated Qatada:I asked Anas, "Was it a custom of the companions of the Prophet (ﷺ) to shake hands with one another?" He said, "Yes
Sahih
Sahih al-Bukhari 6263 ·Book 79, Hadith 37·Also available on sunnah.com·