ישראל דגן: נחל נובע מקור חכמה
The nigun is from reb shlomo carlebach.
I heard the story of this nigun from rabanit tzipora schneider (refuah shlama).... rav shlomo was sick and was bed ridden for weeks... the concert where he sung this was מלא רגש... somewhere i still have the original tape...