Sahih al-Bukhari 6263
Book 79: Asking Permission · Narrated by Qatada
Arabic
حَدَّثَنَا عَمْرُو بْنُ عَاصِمٍ، حَدَّثَنَا هَمَّامٌ، عَنْ قَتَادَةَ، قَالَ قُلْتُ لأَنَسٍ أَكَانَتِ الْمُصَافَحَةُ فِي أَصْحَابِ النَّبِيِّ صلى الله عليه وسلم قَالَ نَعَمْ.
English translation
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
Reference: Sahih al-Bukhari 6263, Book of Asking Permission. English translation by Dr. Muhammad Muhsin Khan.