You're looking for the song "Sun Saathiya" from the movie ABCD (2014). Here are a few options to download the song in MP3 format:
Included with Prime memberships for ad-free listening. Song Details at a Glance Movie: ABCD 2 (Any Body Can Dance 2) Singers: Priya Saraiya, Divya Kumar Music Director: Sachin-Jigar Lyrics: Priya Saraiya Cast: Varun Dhawan, Shraddha Kapoor sun saathiya song download mp3 abcd