The objectives and rationales that the Lawgiver took into consideration, generally and specifically, while legislating to achieve people’s interests.
The clear course in the religion that includes the beliefs, rulings, and ethics.
"Taysīr": facilitation, easing. It is derived from "yusr", which means: ease, docility. Opposite: hardship, difficulty.
"Usūl" (sing. asl): the bottom of something. Original meaning: foundation upon which something is built. Other meanings: the first, the pure, the origin.
"Thabāt": stillness, stability. Original meaning: continuity, permanence. Opposite: end, coming to a halt. Other meanings: uprightness, adherence.
"Thawābit" (sing. thābit): what is constant and stable. It is derived from "thubūt", which means permanence. Other meanings: things that are enduring, well-established, and correct.
"Darūrah": urgent need, necessity. It is derived from "darar", which means: straits, restriction. Opposite: benefit, spaciousness. Other meanings: hardship, severity, poverty.
Interests that are necessary for the establishment of the religion and life, such that if all or some of them are missing, life is ruined or disturbed.
Anything that is used as a means and a way to achieving something else.