Re: Dil ka kia karain Sahib !
Literal Translation:
'Do not let the bee go into the garden The (innocent) moth will be unjustly killed.'
Urdu poets are known for their far-fetched imagery and this couplet is a classic example.
Bees go to the gardens to collect nectar from flowers. This nectar, in turn, gives them energy to costruct their honeycomb, and is an ingredient of honey they make. Honeycomb (wax) is used to make candles. Candle, when lighted, attracts moths to its flame(light). And this flame kills the innocent moth.
Nice, that is quite nicely put I may say.