Salman's character Bajrangi Bhaijaan becomes as attached to the little girl as Salman himself. He's very fond of children and has often spoken of how much he'd like to have his own children. He dotes on his nephews and friends' kids. Establishing a firm bonding with the little girl who plays the Pakistani drifter was child's play for Salman.
Filmography links and data courtesy of The Internet Movie Database.