Are you sure that this shaer is from Allamah Iqbal?
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no, its NOT! what happend is that right after allamah iqbaal's death there were several poets who who tried i vein to promote their own third class shairi in his name. i've allaamah iqbal's deevaan "kulliyaat e iqbaal" and i never came across this she'r and moreover tha language is not that of iqbaal. is she'r kii zabaan aur iskaa bayaan Iqbal kaa nahiiN.
this was my humble opimion :)
Ghalib kaa she'r apnii asl soorat meN...tasHeeH [correction] kar leN plz:
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zaahid sharaab piine de masjid meN baiTh kar
yaa vo jagah bataa jahaaN par Khudaa na ho