الشائي المريد
The One who wills and intends.
Shāʾī, from the verb *shāʾa*, is explained here as near in meaning to murīd, the one who wills. In theology, will concerns the determination of one outcome among possibilities: an event could occur earlier or later, here or elsewhere, yet it occurs in a definite manner.
This specification is not identical to power. Power concerns the possible act; will concerns its chosen realization. Divine will should not be interpreted through human uncertainty, ignorance, indecision or need-driven desire.