(27) باب الْمُصَافَحَةِ
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
In-book reference: Book 79, Hadith 37
USC-MSA web (English) reference(deprecated numbering scheme): Vol. 8, Book 74, Hadith 279