It is narrated from Habib bin Salim that a boy named Qarqoor had intercourse with his wife's slave-girl. This matter was brought before (the Companion of the Messenger) Sayyiduna Nu'man bin Bashir (may Allah be pleased with him), who was the governor of Kufa. He said: I will give a decisive ruling about this. If his wife has made her slave-girl lawful for him, then I will give this slave a hundred lashes, and if his wife has not permitted him, then I will stone this slave. The woman was asked: What do you say regarding your husband? The woman said: I have made my slave-girl lawful for my husband (i.e., I permitted him to have intercourse with her). Thus, Sayyiduna Nu'man (may Allah be pleased with him) gave him a hundred lashes.
Yahya bin Hammad (the teacher of ad-Darimi) said: This is marfu‘.