Talking about 'Himmatwala' which starred Ajay Devgn, filmmaker Sajid Khan said, "Ajay pulled off the scariest prank on me...[at 3 am]. I...have a fear of sleeping...with all lights off." "Ajay made one of the assistants...put a walkie-talkie [in the room]...They would whisper 'Saaaaajid'...Then they put gravy on their hand and...put 'haath ka nishaan' on the bathroom mirrors," added Sajid.