(Or something like that, cause I'm not good at Hindi)
The meaning of this would be like :
" When someone's heart is overwhelmed with joy, He doesn't need to yell it out to everybody (they can see that in his expression)"
(What's that suppose to mean?)
Guess I have to find someone who knows Hindi well and find it out.
** There could be another meaning of this. if I interpret the line as :
" Dill ki jo hosh hi hay, Bate na kar"
Then the meaning could be:
" Those who hold great knowledge within, shouldn't spread it, (as such power could be dangerous) ]http://t3.gstatic.com/images?q=tbn:1-hrAnMmybMHfM:http://www.blog-city.info/en/img9/929_1222.jpg
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