What are the requirements for specifying the work volume in a labor contract for brick making?

Primary text

If the labor volume is determined by the work itself, the contract must explicitly state the number of bricks to be made, the specific mold (*qalib*) to be used, and the location of the striking. This specificity is required because the compensation (wage) varies based on these factors, as the ease of accessing the earth or the proximity of water affects the effort required.