Rishi, 62, said he was supposed to work with the "Chashme Buddoor" star in two films simultaneously.
"Miss you. We were to do two films together simultaneously ," he posted on Twitter.
Rishi also paid homage to the late actor ahead of his 67th birthday on March 25.
"Remembering my friend colleague Farooq Sheikh on what would have been his 67th birthday. On 25th March! R I P ! You were a noble soul," he added.
Farooq died of a heart attack in Dubai on December 28, 2013.