In(adequate) thanks...

agar mera har zarra shukr karey
toh usi zarrey ka shukr adaa ho paayega
agar mera har lamha shukr karey
tab bhi us ek lamhe ka shukr kiya jaayega

If I thanked you with every molecule
it would be thanks for that molecule only
If I thanked you every living moment
can it be anything more than momentary

shukr tujh se jin ka adaa karna hai
woh toh sadiyaan hain aur zindagaaniyaan bhi
ek kal jo beet gaya bina tere zikr ke
aur ek aaj jis mein phir bhi koi kami nahi

When I think about all I owe thanks for
then decades and lifetimes stand before me
Yesterday went by in oblivion to you
yet today I have been blessed abundantly

how can I say it better than Ghalib...

Jaan di, di hui usi ki thhi...
haq toh yeh hai k haq adaa na hua

Were I to give my life, I could not repay you
as this life was given by you in the first place