Know why is Salman Khan coming up with Salim-Javed's story

Salman Khan, Zoya Akhtar and Farhan Akhtar are going to make a documentary on Salim Khan and Javed Akhtar. The documentary will feature the life story of Salim and Javed, who worked together in many films. Know what is the story of Salim-Javed in this video.