وأما الرخصة: فعبارة عن اليسر والسهولة
Linguistically, rukhsah means ease and facility.
وفي الشرع: صرف الأمر من عسر إلى يسر بواسطة عذر في المكلف
Technically, it is the adjustment of a legal requirement from hardship to ease because of an excuse affecting the accountable person.
The definition has three linked elements: an existing original ruling, a legally relevant excuse affecting the person, and relief authorized because of that excuse. Merely preferring an easier option is not, by itself, a rukhsah.