Meaning
Hardheartedness; the stony, unfeeling cruelty of the beloved.
Literally: stone-heartedness
How Iqbal uses it
The beloved's heart as unyielding rock against which the lover's pleas break; Iqbal contrasts such stoniness with the molten heart of true ishq.
See it in the verse
Sangdili in Iqbal’s couplets
Jahan-e-taza ki afkar-e-taza se hai numood
Ki sang-o-khisht se hote nahin jahan paida
Ki sang-o-khisht se hote nahin jahan paida
A new world comes into being from new thoughts — for worlds are not built out of stone and brick.
Action · Aspiration · Awakening
Wahi jahan hai tera jis ko tu kare paida
Ye sang-o-khisht nahin jo teri nigah mein hai
Ye sang-o-khisht nahin jo teri nigah mein hai
Yours alone is the world you yourself create; not this one of stone and brick that lies before your eyes.
Selfhood · Action · Aspiration