Meaning
You; the respectful second-person pronoun; also a reflexive 'oneself'.
See it in the verse
Aap in Iqbal’s couplets
Dhoondta phirta hoon main Iqbal apne aap ko
Aap hi goya musafir aap hi manzil hoon main
Aap hi goya musafir aap hi manzil hoon main
I wander about, Iqbal, searching for my own self — as if I am at once the traveller and the destination.
Self-Knowledge · Restlessness · Selfhood
Tumhari tahzib apne khanjar se aap hi khud-kushi karegi
Jo shakh-e-nazuk pe aashiyana banega na-paedar hoga
Jo shakh-e-nazuk pe aashiyana banega na-paedar hoga
Your civilisation will take its own life with its own dagger; a nest built on a fragile branch will never last.
Adversity · Self-Knowledge · Justice