Bollywood superstar Salman Khan is mourning the death of his close friend, Sushil Kumar. On Sunday night, he took to Instagram to share a heartfelt tribute for Kumar, whom he called a brother for over four decades.

"This guy has been a brother for 42 years, the nicest, kindest, most helpful, even if he was down and out, always smiling, dancing and no pain, no stress in the worst of situations," Khan wrote.