How many movies have Mohamed Youssef and Samir Khafagi collaborated on?

They have worked on 5 movies together! Their first movie together was She, I, and His Highness (1966) while their highest rated movie together was Hawaa2 el sa3a 12 (1968). They have not worked together since Eve at 12 o'clock (1969). They are most known for their comedy films together.