Muhammad bin al-Munkadir related that he heard Sayyidah Umaymah bint Ruqayqah (may Allah be pleased with her) say that she gave the pledge of allegiance to the Messenger of Allah (peace and blessings be upon him), and he (peace and blessings be upon him) laid upon her the same condition that he laid upon the believing women. Then he said: "As far as you are able."
Hadith Referenceالمعجم الكبير للطبراني / مسند النساء / 20845