(1) باب إِبْطَالِ بَيْعِ الْمُلاَمَسَةِ وَالْمُنَابَذَةِ
Abu Huraira (Allah be pleased with him) reported that Allah's Messenger (ﷺ) forbade (two types of transactions) Mulamasa and Munabadha
Reference: Sahih Muslim 1511 a
In-book reference: Book 21, Hadith 1
USC-MSA web (English) reference(deprecated numbering scheme): Book 10, Hadith 3608