Hadith 8:3079
Abu Bakr narrated to us, he said: Waki’ narrated to us, he said: ‘Imran bin Hudayr narrated to us, from al-Nazzal bin ‘Ammar, from Ibn ‘Abbas, he said: Whoever possesses three hundred dirhams, Hajj becomes obligatory upon him, and marriage to slave women becomes forbidden for him.
حدثنا أبو بكر قال نا وكيع قال نا عمران بن حدير عن النزال بن عمار عن بن عباس قال من ملك ثلاثمائة درهم وجب عليه الحج وحرم عليه نكاح الإماء