Meaning
The great secret; the supreme mystery of union and unity guarded by the adepts.
Literally: the greatest secret
See it in the verse
Sirr-e-Akbar in Iqbal’s couplets
Khudi ka sirr-e-nihan La Ilaha Illallah
Khudi hai taeg fasan La Ilaha Illallah
Khudi hai taeg fasan La Ilaha Illallah
The hidden secret of the self is 'There is no god but God'; the self is the sword, and that declaration is the whetstone that sharpens it.
Selfhood · Self-Knowledge · Courage
Khudi mein doob ja ghafil, ye sirr-e-zindagani hai
Nikal kar halqa-e-shaam-o-sahar se javedan ho ja
Nikal kar halqa-e-shaam-o-sahar se javedan ho ja
Dive into your selfhood, O heedless one — this is the secret of life. Step out of the ring of evening and morning, and become everlasting.
Selfhood · Self-Knowledge · Awakening