A listener asks about the ahad (single-narrator) hadith and whether it is acted upon in the fixed punishments, and what is the ruling on one who does not act upon it?

Question:
May Allah reward you with good. A listener asks about the ahad (single-narrator) hadith, and whether it is acted upon in the fixed punishments? And what is the ruling on one who does not act upon it? May Allah reward you with good.

Answer:
Everything that is authentic from the Prophet (peace and blessings be upon him) must be acted upon, whether it is mutawatir (mass-transmitted) or ahad (single-narrator), for the criterion is authenticity. So if it is established from the Prophet (peace and blessings be upon him), it must be acted upon in the fixed punishments and in other matters. As for those who say that the ahad (single-narrator) report is not acted upon in matters of creed, or in such-and-such, or in such-and-such, this is a false statement. Allah (Mighty and Majestic) says: This is general for everything that has reached us from the Messenger (peace and blessings be upon him). Yes.