Vocabulary

ਕੁਫ਼ਰ
kufar

blasphemy, sin, religious transgression (from Arabic kufr)

noun
In this song
Kufar · Diljit Dosanjh
Chorus 1
ਹੀਰੇ ਕੁਫ਼ਰ ਕਰੇ
heere kufar kare
Heer, your beauty is sinful