حَدَّثَنِي مُحَمَّدُ بْنُ عَبَّادٍ، حَدَّثَنَا عَبْدُ الْعَزِيزِ بْنُ مُحَمَّدٍ، عَنْ حُمَيْدٍ، عَنْ أَنَسٍ، أَنَّ النَّبِيَّ صلى الله عليه وسلم قَالَ ‏"‏ إِنْ لَمْ يُثْمِرْهَا اللَّهُ فَبِمَ يَسْتَحِلُّ أَحَدُكُمْ مَالَ أَخِيهِ ‏"‏ ‏.‏

Anas (Allah be pleased with him) reported Allah's Apostle (PBUH) as saying: If Allah does not fructify them, then what is permissible for one of you to take the wealth of his brother? Translation Not Available

Book reference: Sahih Muslim Book 22 Hadith 3775
Web reference: Sahih Muslim Book 10 Hadith 1555 c