I was recently discussing with a friend who is fluent in Gurmukhi and punjabi the subject of how we tend to pronounce certain words in Gurbani differently to the way its actually been written down.
Sabadh for eg:
|sbid rqIAw sohwgxI iqn ivchu haumY jwie ]
| sabadh ratheeaa sohaaganee thin vichahu houmai jaae ||
|The happy soul-brides are attuned to the Shabad; their egotism is eliminated from within.|
I guess we say shabad instead of sabadh as this is how its pronounced in hindi. hmmm.