Lyrcis & Translation: (from BollyMeaning.com)
dil ke dil mein kya chhupa hai,  ye to bas dil ko pata hai
dhadkanon pe kiska pehra,  kaun kab kyun dil mein thehra
dil ke dil mein kya chhupa hai,  ye to bas dil ko pata hai,
kya ajab is dil ki ada hai…
sarphira hai, sarphira hai, dil to kuch kuch sarphira hai..

what’s hidden in the heart of heart, this is known only to the heart
whose guard is there on the heartbeats, when and who stayed in the heart when,
what’s hidden in the heart of heart, this is known only to the heart
what strange is the style of this heart…
it’s mad, it’s crazy, the heart is a little crazy..

khwahishon se aankh micholi khelta hai dil hamesha
kashmakash ki bandishen bhi jhelta hai dil hamesha
chehre pe ishtihar laga kar ghoomta hai
hasraton ki numaish karke jhoomta hai
sarphira hai, sarphira hai, dil to kuch kuch sarphira hai..

the heart always plays hide and seek with wishes,
the heart always bears with the restrictions of dilemmas,
is roams around with a advertisement on its face,
it dances doing a show of its wishes,
it’s mad, it’s crazy, the heart is a little crazy..

ye samajh na paya koi, karta hai dil kyon naadani
dil ke laakhon hisse hain aur, dil ki lakhon hain kahani
ye dil jo atka to atak hi jaata hai
tadapta hai phir bhi khamosh rehta hai
sarphira hai, sarphira hai, dil to kuch kuch sarphira hai..

nobody understood,
why the heart does this stupidity,
the heart has lacs of pieces and
the heart has lacs of stories
once this heart gets stuck, it just gets stuck..
it feels the agony, but still keeps silent..
it’s mad, it’s crazy, the heart is a little crazy..