“You shall no longer supply the people with straw for making bricks. They must go and gather their own straw.
Finding that Pharaoh had no veneration at all for God, Moses and Aaron next try whether he had any compassion for Israel, and become humble suitors to him for leave to go and sacrifice, but in vain. I. Their request is very humble and modest, Exo 5:3. They make no complaint of the rigour they were ruled with.
Commenting on Exodus 5:3-9
Ye shall no more give the people straw to make brick,.... Whether this was given and used to mix with the clay, as is done in some places (h), that the bricks made thereof might be firmer and stronger, or to burn them with in the furnaces, or to cover them from the heat of the sun, that they might not dry too soon and...
Ye shall no more give the people straw to make brick--The making of bricks appears to have been a government monopoly as the ancient bricks are nearly all stamped with the name of a king, and they were formed, as they are still in Lower Egypt, of clay mixed with chopped straw and dried or hardened in the sun.