Sayyidah Khawlah bint Qays (may Allah be pleased with her), the wife of Sayyiduna Hamzah (may Allah be pleased with him), narrates: The Messenger of Allah (peace and blessings be upon him) owed one wasq of dates to a man of Banu Sa'idah. The man came to demand it, and the Messenger of Allah (peace and blessings be upon him) ordered a man of the Ansar to pay him. He gave him dates of a lower quality than his own dates, so he refused to accept them. The Ansari said: "Are you returning what the Messenger of Allah (peace and blessings be upon him) has given?" He said: "Yes, and who is more entitled to justice than the Messenger of Allah (peace and blessings be upon him)?" On hearing this, the eyes of the Messenger of Allah (peace and blessings be upon him) filled with tears, then he (peace and blessings be upon him) said: "He has spoken the truth; who is more entitled to justice than me? May Allah not purify a nation whose weak cannot take their right from their strong without being harmed." Then he said: "O Khawlah, promise him (a time), treat him gently and courteously, and pay off his debt, for there is no debtor who leaves his creditor pleased except that the creatures of the earth and the fish of the seas pray for mercy for him; and there is no servant who, while having the means, puts off his creditor except that Allah records a sin against him every day and night."
Imam al-Tabarani (may Allah have mercy on him) said: "This hadith is narrated from Sayyidah Khawlah (may Allah be pleased with her) only with this chain; Hibban bin Ali is alone in narrating it."
Hadith Referenceالمعجم الأوسط / باب الميم / 5029
Hadith Takhrij«أخرجه الطحاوي فى «شرح مشكل الآثار» برقم: 4329، والطبراني فى «الكبير» برقم: 591، 592، 635»