Narrated 'Amr bin Shu'aib on his father's authority from his grandfather (RA): "Allah's Messenger ( صلی اللہ علیہ وسلم ) said: "The condition of a loan combined with a sale is not lawful, now two conditions relating to one transaction, nor the profit arising from something which is not in one's charge, nor selling what is not in your possession." [Reported by al-Khamsa. at-Tirmidhi, Ibn Khuzaimah and al-Hakim graded it Sahih (authentic)] . al-Hakim reported it in 'Uloom al-Hadith, from the narration of Abu Hanifah, from 'Amr bin Shu'aib, with the wording: He [the Prophet ( صلی اللہ علیہ وسلم )] forbade a transaction (combined with) a condition. at-Tabarani reported it through this chain of narrators in al-Awsat, and it is Gharib (reported by a single narrator).