[Machine] I asked Anas ibn Malik, "Was shaking hands a common practice among the companions of the Messenger of Allah?" He replied, "Yes."  

سَأَلْتُ أَنَسَ بْنَ مَالِكٍ ؓ قُلْتُ أَكَانَتِ الْمُصَافَحَةُ فِي أَصْحَابِ رَسُولِ اللهِ ﷺ؟ قَالَ نَعَمْ  

[Machine] The Messenger of Allah, ﷺ , said, "When two Muslims meet and shake hands, they should praise and seek forgiveness from Allah, and their sins will be forgiven." This was narrated by Abu Dawood in Sunan from Amr ibn Awf, from Hushaym, except that he said it was from Zaid, the father of Hakam al-Utaibi. Abu Ali al-Ruwaybari told us, who informed us that Abu Bakr ibn Dasah narrated to us, who learned it from Abu Dawood, who learned it from Amr ibn Awf, and he mentioned it.  

قَالَ رَسُولُ اللهِ ﷺ إِذَا الْتَقَى الْمُسْلِمَانِ فَتَصَافَحَا فَحَمِدَا اللهَ وَاسْتَغْفَرَاهُ غُفِرَ لَهُمَا 13570 وَرَوَاهُ أَبُو دَاوُدَ فِي السُّنَنِ عَنْ عَمْرِو بْنِ عَوْنٍ عَنْ هُشَيْمٍ إِلَّا أَنَّهُ قَالَ عَنْ زَيْدٍ أَبِي الْحَكَمِ الْعَنَزِيِّ أَخْبَرَنَاهُ أَبُو عَلِيٍّ الرُّوذْبَارِيُّ أَنْبَأَ أَبُو بَكْرِ بْنُ دَاسَةَ ثنا أَبُو دَاوُدَ ثنا عَمْرُو بْنُ عَوْنٍ فَذَكَرَهُ  

The Prophet ﷺ said: Two Muslims will not meet and shake hands having their sins forgiven them before they separate. (Using translation from Abū Dāʾūd 5212)   

قَالَ رَسُولُ اللهِ ﷺ مَا مِنْ مُسْلِمَيْنِ يَلْتَقِيَانِ فَيَتَصَافَحَانِ إِلَّا غُفِرَ لَهُمَا قَبْلَ أَنْ يَتَفَارَقَا