Musannaf Ibn Abi Shaybah 18198 — A man having intercourse

Qatadah (may Allah have mercy on him) said: If a man had intercourse with his mukatabah slave-girl, then if he did so by force, the hadd punishment will be applied and he must also pay the 'uqr (compensation for the violated private part). And if he did so with the mukatabah's consent, the hadd will be applied, but he will not pay the 'uqr.