It is narrated from Sayyiduna Abdullah bin Umar (may Allah be pleased with them both) that the Prophet (peace and blessings be upon him) forbade the sale of al-kali' bi al-kali' (credit in exchange for credit). This hadith is sahih (authentic) on the condition of Muslim, and the two Shaykhs (Bukhari and Muslim) did not record it. It has also been said: from Musa bin Uqbah, from Abdullah bin Dinar:

It is narrated from Sayyiduna Abdullah bin Umar (may Allah be pleased with them both) that the Prophet (peace and blessings be upon him) forbade the sale of al-kali' bi al-kali' (credit in exchange for credit). I heard Ustadh Abu al-Walid say: The sale of al-kali' bi al-kali' means the sale of credit in exchange for credit.