The father of al-Suddi said: Sayyidah Zaynab bint Qays bin Makhramah (may Allah be pleased with her) made a contract of manumission (mukatabah) with me for ten thousand (dirhams). Then, when the instalment became due, she waived one thousand for me. "And Zaynab (may Allah be pleased with her) was among those who prayed with the Messenger of Allah (peace and blessings be upon him) towards both qiblahs."
Hadith Referenceالمعجم الكبير للطبراني / مسند النساء / 21103