al-Musallam ibn Muhammad al-Qaysi, and ʿAli ibn Ahmad—I say: both of the two just named authorized me as well—and ʿAbd al-Rahman ibn Muhammad the jurist, who related that Hanbal ibn ʿAbd Allah had reported to them; Hibbat Allah ibn Muhammad informed us; Abu ʿAli ibn al-Mudhhib informed us; Ahmad ibn Jaʿfar al-Maliki informed us; ʿAbd Allah ibn Ahmad ibn Hanbal informed us; my father narrated to me; Muhammad ibn Idris al-Shafiʿi informed us; Malik narrated to us, from Nafiʿ, from Ibn ʿUmar:
The Messenger of Allah ﷺ said: “None of you may sell over the sale of another; he forbade najsh (fraudulent bidding), he forbade the sale of ḥabal al-ḥabala, and he forbade muzābana.”
Muzābana is to barter fresh dates still on the palm for a specified measure of dried dates, or to barter grapes on the vine for a measured amount of raisins. (1)
This is an authentic hadith agreed upon. Some of the leading scholars, however, separate it, counting it as four individual reports. All four of these forms of sale are prohibited, and the last two are invalid.
Abu al-Husayn ʿAli ibn Muhammad the jurist, Muhammad ibn Abi al-ʿIzz the draper, and Sitt al-Wuzaraʾ, daughter of the judge ʿUmar ibn Asʿad, all informed us in an audition and said:
Abu ʿAbd Allah al-Husayn ibn al-Mubarak al-Yamani informed us as well (ḥ).
Ahmad ibn ʿAbd al-Munʿim al-Qazwini informed us; Muhammad ibn Saʿid al-Sufi in Baghdad informed us; he said: Tahir ibn Muhammad informed us