Example 1: “If it rains, the soil becomes wet” has one condition and one result; this alone is not muzāwajah.
Example 2: “If learning increases, understanding matures; if practice increases, skill grows” has two relations, but whether it functions as a polished instance of muzāwajah also depends on how the paired elements are integrated in the discourse.
It is inaccurate to call every parallel sentence muzāwajah. The source's specific design is the interplay of two sets of meanings within conditional and consequent structures.