Hazrat Abbad bin Mansoor (may Allah have mercy on him) says that I asked Hazrat Qasim bin Muhammad (may Allah have mercy on him) that my father's wife fed milk to a girl from the share of my paternal half-sister; is that girl lawful for me? He replied, "No, your father is her father." I asked the same question to Hazrat Tawus (may Allah have mercy on him), and he also said the same. I asked this question to Hasan (may Allah have mercy on him), and he also said the same. I asked this question to Hazrat Mujahid (may Allah have mercy on him), and he said that there is a difference of opinion among the scholars in this matter. I do not say anything about it. When I asked Ibn Sireen (may Allah have mercy on him) this question, he also said what Hazrat Mujahid (may Allah have mercy on him) said.