No Hand Shake
Please don’t ever think Muslims who do not shake hands with the opposite sex do so out of condescension. Read below for a clear understanding.
From Islam Q&A:It is not permissible for a man who believes in Allah (God) and His Messenger to put his hand in the hand of a women who is not permissible for him or who is not one of his mahrams. Whoever does that has wronged himself (i.e., sinned).
It was narrated that Ma’qil ibn Yassaar said: the Messenger of Allaah (peace and blessings of Allaah be upon him) said: “For one of you to be stabbed in the head with an iron needle is better for him than that he should touch a woman who is not permissible for him.”
Understand the level of respect that is being shown when Muslims do not shake hands with the opposite sex.