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
ibnmajah:2185 – al-ʿAbbās b. al-Walīd al-Dimashqī > Marwān b. Muḥammad > ʿAbd al-ʿAzīz b. Muḥammad > Dāwud b. Ṣāliḥ al-Madanī from his father > Abū Saʿīd al-Khudrī

I heard Abu Sa'eed Al-Khudri say: "The Messenger of Allah ﷺ said: 'Transactions may only be done by mutual consent."'  

ابن ماجة:٢١٨٥ – حَدَّثَنَا الْعَبَّاسُ بْنُ الْوَلِيدِ الدِّمَشْقِيُّ حَدَّثَنَا مَرْوَانُ بْنُ مُحَمَّدٍ حَدَّثَنَا عَبْدُ الْعَزِيزِ بْنُ مُحَمَّدٍ عَنْ دَاوُدَ بْنِ صَالِحٍ الْمَدَنِيِّ عَنْ أَبِيهِ قَالَ سَمِعْتُ أَبَا سَعِيدٍ الْخُدْرِيَّ يَقُولُ

قَالَ رَسُولُ اللَّهِ ﷺ إِنَّمَا الْبَيْعُ عَنْ تَرَاضٍ  

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Collected by Suyūṭī