Shaking Hands

SHAKING HANDS Arabic musafahah مصافحة
Is enjoined in the Traditions, and is founded upon the express example of Muhammad himself.
AI-Bara’ ibn ‘Azib says the Prophet said, “There are no two Muslims who meet and shake hands but their sins will be forgiven them before they separate.” ‘ (Mishkat, book xxii. ch. iii.)

Based on Hughes, Dictionary of Islam