Sayyiduna Jabir bin Abdullah (may Allah be pleased with them both) said that the Messenger of Allah (peace and blessings be upon him) said: "May Allah have mercy on a generous man who is gentle when he sells, easygoing when he buys, and gentle when he repays."
Hadith Referenceالسنن الكبرى للبيهقي / كتاب البيوع / 10978
Sayyiduna Jabir (may Allah be pleased with him) said that the Messenger of Allah (peace and blessings be upon him) said: "Allah forgave a gentle man before you who was gentle in buying and selling, and when he repaid or demanded repayment."
Hadith Referenceالسنن الكبرى للبيهقي / كتاب البيوع / 10979
Sayyiduna Ibn Umar and Sayyidah Aishah (may Allah be pleased with them) said that the Messenger of Allah (peace and blessings be upon him) said: "Whoever seeks a right, let him seek it with decency, whether it is paid in full or not."
Hadith Referenceالسنن الكبرى للبيهقي / كتاب البيوع / 10980