Shaykh Abu Ishaq Sabi'i narrates from his wife: That woman went to serve Lady Aisha (may Allah be pleased with her), along with her was the mother of a child of Sayyiduna Zayd bin Arqam Ansari (may Allah be pleased with him), and there was another woman as well. The mother of a child of Sayyiduna Zayd bin Arqam Ansari (may Allah be pleased with him) said: "O Mother of the Believers! I bought a slave from Sayyiduna Zayd bin Arqam for eight hundred dirhams on credit, then I acquired him for six hundred dirhams in cash." So Lady Aisha said: "You have made a very bad deal, his (i.e., Sayyiduna Zayd bin Arqam's) jihad with the Noble Prophet (peace and blessings be upon him) has become invalid, until he repents (then the ruling will be different)."