أَخْبَرَنَا عَمْرُو بْنُ عَلِيٍّ، وَحُمَيْدُ بْنُ مَسْعَدَةَ، عَنْ يَزِيدَ، قَالَ حَدَّثَنَا أَيُّوبُ، عَنْ عَمْرِو بْنِ شُعَيْبٍ، عَنْ أَبِيهِ، عَنْ جَدِّهِ، أَنَّ رَسُولَ اللَّهِ صلى الله عليه وسلم قَالَ " لاَ يَحِلُّ سَلَفٌ وَبَيْعٌ وَلاَ شَرْطَانِ فِي بَيْعٍ وَلاَ بَيْعُ مَا لَيْسَ عِنْدَكَ " .
It was narrated from'Amr bin Shu'aib, from his father that his grandfather, Said: that the Messenger of Allah said: "It is not permissible to lend on the condition of a sale, or to have two conditions in one transaction, or to sell what you do not have." (Sahih Translation Not Available
Book Ref: Sunan An Nisai Book 44 Hadith 4611
Web Ref: Sunan An Nisai Vol 5 Book 44 Hadith 4615