This is a result of falling onto the stone. It can be stated in active form. Alternate translation: "will break up into pieces" (See: [[rc://en/ta/man/jit/figs-activepassive]])
"the one that stone falls on." This third metaphor speaks about the Messiah judging those who reject him as if he were a large stone that would crush them. (See: [[rc://en/ta/man/jit/figs-metaphor]])