Caution: Translations of Quran and Ḥadīth may lead to possible misapplications and misinterpretations. This site is intended for students of sacred knowledge that are proficient in comprehending classical Arabic and have a strong foundation in Islamic sciences. Also note that religious injunctions rely on several aspects beyond what one may glean through reading individual aḥādīth.
Qurʾān Bukhārī Muslim Nasāʾī Abū Dāwūd Tirmidhī Ibn Mājah Mālik Aḥmad Dārimī Ḥākim Ibn Ḥibbān Ṭabarānī Nasāʾī's Kubrá Bayhaqī al-Luʾluʾ wa-al-Marjān Ibn Rajab's Fifty Riyāḍ al-Ṣāliḥīn Aḥmad's Zuhd Suyūṭī
bayhaqi:11619 – Abū Ḥāzim al-Ḥāfiẓ > Abū al-Faḍl b. Khamīrawayh > Aḥmad b. Najdah > Saʿīd b. Manṣūr > Hushaym > Dāwud b. Abū Hind > Rabāḥ b. ʿUbaydah > Ibn ʿUmar > Suʾil > a man Āstabḍaʿ Biḍāʿah Fakhālaf Fīhā

[Machine] Ibn Omar is a guarantor, and if he benefits, the profit belongs to the owner of the money.  

البيهقي:١١٦١٩ – وَأَخْبَرَنَا أَبُو حَازِمٍ الْحَافِظُ أنبأ أَبُو الْفَضْلِ بْنُ خَمِيرَوَيْهِ ثنا أَحْمَدُ بْنُ نَجْدَةَ ثنا سَعِيدُ بْنُ مَنْصُورٍ ثنا هُشَيْمٌ أنبأ دَاوُدُ بْنُ أَبِي هِنْدَ عَنْ رَبَاحِ بْنِ عُبَيْدَةَ عَنِ ابْنِ عُمَرَ أَنَّهُ سُئِلَ عَنْ رَجُلٍ اسْتَبْضَعَ بِضَاعَةً فَخَالَفَ فِيهَا فَقَالَ

ابْنُ عُمَرَ هُوَ ضَامِنٌ وَإِنْ رَبِحَ فَالرِّبْحُ لِصَاحِبِ الْمَالِ