We did this song in middle school choir.

The English version went like:

They are selling shoes at the gate of heaven
for the barefoot angels who want to sell them
sleep now my baby sleep now my baby
aruu arru

Blessed are the babies who dream, blessed are the mothers that watch them
sleep now my baby sleep now my baby
arru arru

we did some in spanish too, but at the time I hadn't really gotten into it, so I dont remember what those are but an above post has them in spanish.