How many movies have Laxmikant-Pyarelal and Shatrughan Sinha collaborated on?

They have worked on 4 movies together! Their first movie together was Choron Ki Baaraat (1980) while their highest rated movie together was Be-Reham (1980). They have not worked together since Asli Naqli (1986). They are most known for their action films together.