If you give it as a service fee and as a gratuity or tip, this is not riba.

Sir I dont have proper knowledge about certain issues.For example if in a dealing a price is decided for something( service or item) and I give more money to him or ask him to keep the change after I give him money.Is that also Riba?Secondly if I ever committed a wrong in such transactions without knowing the ruling,have I commited a sin.

Riba |