The Prophet (peace and blessings be upon him) said:
"The delaying (of repayment) by one who is able to repay a debt makes lawful (the violation of) his honour and his punishment."
Hadith Referenceصحیح الجامع الصغیر / حرف اللام / 5487
Hadith Gradingالألبانی:حسن
Hadith Takhrij[حم د ن هـ ك] عن الشريد بن سويد. المشكاة ٢٩١٩، الإرواء ١٤٣٤. فصل في المحلى بـ [ال] من هذا الحرف.