An-Nur 24:2

Azzaniyatu wazzaneefajlidoo kulla wahidin minhuma mi-atajaldatin wala ta/khuthkum bihima ra/fatunfee deeni Allahi in kuntum tu/minoona billahiwalyawmi al-akhiri walyashhad AAathabahumata-ifatun mina almu/mineen

The [unmarried] woman or [unmarried] man found guilty of sexual intercourse - lash each one of them with a hundred lashes, and do not be taken by pity for them in the religion [i.e., law] of Allāh, if you should believe in Allāh and the Last Day. And let a group of the believers witness their punishment.

The fornicating woman and the fornicating man, flog each one of them with one hundred stripes. No pity for them should prevail upon you in the matter of Allah’s religion, if you really believe in Allah and the Last Day; and a group of believers must witness their punishment.