Bulugh al-MaramChapter 7Hadith 912
Full Sharh — Bulugh al-Maram 912
وَلِأَبِي دَاوُدَ: { مَنْ بَاعَ بَيْعَتَيْنِ فِي بَيْعَةٍ فَلَهُ أَوَكَسُهُمَا, أَوْ اَلرِّبَا } 1 .1 - حسن. رواه أبو داود ( 3460 ).
English Translation
Abu Dawud has:: "If anyone makes to transactions combined in one he is entitled to take the lower price, or (it is considered) usury."
Source
Bulugh al-Maram(بلوغ المرام)
Business Transactions
Hadith Number
912