Mishkat al-Masabih · Book 11 · Hadith 2868
وَعَنْ أَبِي هُرَيْرَةَ قَالَ: نَهَى رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ عَنْ بَيْعَتَيْنِ فِي بيعةٍ. رَوَاهُ مَالك وَالتِّرْمِذِيّ وَالنَّسَائِيّ
Abu Huraira said God’s Messenger forbade two transactions combined in one (Making part-payment with the promise of the remainder later: or selling an article for a stated price on condition that the buyer sells article f…