وحكمها: أن يُطالَبَ المرء بإحيائها
Its consequence is that a person is called upon to preserve and uphold it.
“Upholding” an established Sunnah is not necessarily fulfilled by a single isolated performance. Where regular observance is part of its status, maintaining the religious practice matters. Prescribed manners of worship and established communal religious practices show this dimension.
The demand to follow Sunnah is not identical to the demand attached to fard or wajib. A proper classification preserves its importance without converting every commendable religious act into a definitive obligation.