Three Legendary Poets

These three poets are legendary in  Urdu literature as also their following couplets. 

The poets Ghalib(1797-1869), Iqbal(1877-1938)

and 

Faraz(1931-2008) present their views on the universality of God in the couplets. It was not a feud. At best you can call it a poetic difference of opinion by intellectual and witty minds, spread across centuries. 

Ghalib started it: In the 19th century , it was a bold statement. But then Ghalib was never known for meekness or following the crowd. 

“Zahid, sharaab peene de masjid mein baith kar

Ya wo jagah bataa, jahaan Khuda nahin”

[Let me drink in a mosque; or tell me the place where there is no God.']

Allama Iqbal was not convinced and decided to reply about half a century later. So in the late 19th-early 20th  century, his poetic reply to Ghalib

“Masjid Khuda ka ghar hai, peene ki jagah nahin

Kaafir ke dil mein jaa, wahaan khuda nahin”

Mosque is the abode of God, not a place to drink. Go to the heart of a non-believer because there God is not.

Faraz had the last word. (Later half of 19th century) .

“Kaafir ke dil se aaya hun, main ye dekh kar Faraz,

Khuda maujood hai wahaan, par usey pata nahin”

[I have returned from the heart of the disbeliever and i have observed:
God is present in his heart too, but he just doesn’t know it. (he is ignorant/sleeping].