Meaning
To expose a hidden secret or scandal.
Literally: to tear open the veil
See it in the verse
Pardah faash karna in Iqbal’s couplets
Ho mera kaam ghareebon ki himayat karna
Dard-mandon se zaeefon se mohabbat karna
Dard-mandon se zaeefon se mohabbat karna
Let my work be to defend the poor — to love the suffering and the weak.
Justice · Humility · Love
Is raaz ko ik mard-e-firangi ne kiya faash
Harchand ki dana ise khola nahin karte
Harchand ki dana ise khola nahin karte
A man of the West let this secret out — though the wise usually do not disclose it.
Justice · Awakening