Vocabulary

ਰਾਜ-ਰਾਜ
raj-raj

again and again, till full/satisfied (reduplicated for emphasis)

adverb
In this song
Haan Da · Diljit Dosanjh
Verse 3
ਸੈਂਟੀ ਹੋਗੀ ਰਾਜ-ਰਾਜ ਕਰ-ਕਰ ਵੇ
senti hogi raj-raj kar-kar ve
Getting all senti from this, over and over