«الرخصة لغة: اليسر والسهولة، وشرعاً: صرف الأمر من عسر إلى يسر، وهي على نوعين»
Rukhsah lexically means ease; technically it moves a matter from hardship toward relief. The author presents two forms.
Concession does not mean that people may change rulings whenever they wish. It is a legally recognized relaxation linked to particular circumstances, such as coercion or necessity.
In the first form the underlying prohibition remains while relief is granted for a coerced outward act. In the second, consuming something otherwise forbidden becomes permitted despite the presence of its ordinary prohibitive cause.