Hadith.5052 - Al-Hasan ibn Mahbub narrated from Al-Harith ibn Al-Ahwal from Burayd Al-ʿIjli from Abu Jafar Imam Muhammad ibn Ali Al-Baqir (as) regarding a slave woman who commits adultery.
Imam (as) said
"She is to be lashed half the prescribed punishment, whether she has a husband or does not have a husband."