وَعَنْ أَبِي هُرَيْرَةَ
قَالَ: نَهَى رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ عَنْ بَيْعَتَيْنِ فِي بيعةٍ
or selling an article for a stated price on condition that the buyer sells article for a stated price. Malik, Tirmidhi, Abu Dawud and Nasai transmitted it.
Mishkat al-Masabih 2750, Book 12, Business Transactions, Hadith 106. 1 min read