Asking for Reduction of Price After Concluding a Deal

“I once bought a slave-girl for abu ‘ Abd Allah (a.s.), and went to get dirhams and I asked him (the Imam), ‘Can I ask to reduce the price ? 5 He (the Imam) said, ‘No, because the Messenger of Allah, O Allah, grant…

“I once took a slave-girl to abu ‘Abd Allah, Alayhi al-Salam. He (the Imam) bargained and I also bargained very hard. I then sold her to him (the Imam) and he (the Imam) shook my hand and I said, ‘I pray to Allah to keep…