عَن قتادةَ قَالَ: قُلْتُ لِأَنَسٍ: أَكَانَتِ الْمُصَافَحَةُ فِي أَصْحَابِ رَسُولِ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ؟ قَالَ: نعم. رَوَاهُ البُخَارِيّ
Qatadah (may Allah have mercy on him) narrates: I asked Anas (may Allah be pleased with him), "Was there (the practice of) handshaking among the companions of the Messenger of Allah (peace and blessings be upon him)?" He replied: "Yes." Narrated by al-Bukhari.