´Amr bin Ash-Shariq narrated that Ibn Abbas was asked about the case in which a man had two slave girls, one of them suckled a girl and the other suckled a boy, is it lawful for the boy to marry the girl? She said:` “No, the semen is the same.”
Hadith Referenceسنن ترمذي / كتاب الرضاع / 1149
Hadith Gradingالألبانی:صحيح الإسناد | زبیر علی زئی:(1149) إسناده ضعيف, ابن شھاب الزھري مدلس و عنعن (تقدم:440)