Qaraar is the Urdu lafz for a feeling of contentment and stability, an understanding (typically in a relationship)

Here is the famous couplet by Urdu poet Momin, and below is the link to the ghazal in Ghulam Ali’s voice:

woh jo humme tumme qaraar thaa, tumhein yaad ho ke naa yaad ho
vahi yaani vaada nibhaah kaa tumhein yaad ho ke naa yaad ho

That understanding, that feeling of contentment we had between us, maybe you remember or maybe you dont
That promise of staying together, maybe you remember or maybe you don’t