Allah, the Exalted, said:
رياض الصالحينAbū Zakariyyā Muḥyī al-Dīn Yaḥyā ibn Sharaf al-Nawawī٢٨٤ - باب تحريم مطل الغني بحق طلبه صاحبه
٢٨٤ - باب تحريم مطل الغني بحق طلبه صاحبه
Indeed, Allāh commands you to render trusts to whom they are due and when you judge between people to judge with justice. Excellent is that which Allāh instructs you. Indeed, Allāh is ever Hearing and Seeing.
And the Exalted said:
۞ وَإِن كُنتُمْ عَلَىٰ سَفَرٍ وَلَمْ تَجِدُوا۟ كَاتِبًا فَرِهَـٰنٌ مَّقْبُوضَةٌ ۖ فَإِنْ أَمِنَ بَعْضُكُم بَعْضًا فَلْيُؤَدِّ ٱلَّذِى ٱؤْتُمِنَ أَمَـٰنَتَهُۥ وَلْيَتَّقِ ٱللَّهَ رَبَّهُۥ ۗ وَلَا تَكْتُمُوا۟ ٱلشَّهَـٰدَةَ ۚ وَمَن يَكْتُمْهَا فَإِنَّهُۥٓ ءَاثِمٌ قَلْبُهُۥ ۗ وَٱللَّهُ بِمَا تَعْمَلُونَ عَلِيمٌ
And if you are on a journey and cannot find a scribe, then a security deposit [should be] taken. And if one of you entrusts another, then let him who is entrusted discharge his trust [faithfully] and let him fear Allāh, his Lord. And do not conceal testimony, for whoever conceals it - his heart is indeed sinful, and Allāh is Knowing of what you do.
وعن أَبي هريرة - ﵁: أنَّ رسول الله - ﷺ - قَالَ: «مَطْلُ الغَنِيِّ ظُلْمٌ، وَإِذَا أُتْبعَ أَحَدُكُمْ عَلَى مَلِيءٍ فَلْيَتْبَع». متفق عَلَيْهِ. معنى «أُتبع»: أُحِيل .
And on the authority of Abū Hurayrah (may Allah be pleased with him): that the Messenger of Allah (ﷺ) said: "The delaying of payment by one who is able to pay is injustice; and if one of you is referred for payment to a solvent person, let him follow up that referral." Agreed upon. The meaning of «utbiʿa» is: he was referred, i.e. had the debt transferred to another.