It is recommended to waive debts

Abu Sa'id al-Khudri (Allah be pleeased with him) reported that in the time of Messenger of Allah ﷺ a man suffered loss in fruits he had bought and his debt increased;
so Messenger of Allah ﷺ told (the people) to give him charity and they gave him charity, but that was not enough to pay the debt in full, whereupon Messenger of Allah ﷺ said to his creditors:" Take what you find, you will have nothing but alms.

حَدَّثَنَا قُتَيْبَةُ بْنُ سَعِيدٍ، حَدَّثَنَا لَيْثٌ، عَنْ بُكَيْرٍ، عَنْ عِيَاضِ بْنِ عَبْدِ اللَّهِ، عَنْ أَبِي، سَعِيدٍ الْخُدْرِيِّ قَالَ أُصِيبَ رَجُلٌ فِي عَهْدِ رَسُولِ اللَّهِ ﷺ فِي ثِمَارٍ ابْتَاعَهَا فَكَثُرَ دَيْنُهُ فَقَالَ رَسُولُ اللَّهِ ﷺ " تَصَدَّقُوا عَلَيْهِ " . فَتَصَدَّقَ النَّاسُ عَلَيْهِ فَلَمْ يَبْلُغْ ذَلِكَ وَفَاءَ دَيْنِهِ فَقَالَ رَسُولُ اللَّهِ ﷺ لِغُرَمَائِهِ " خُذُوا مَا وَجَدْتُمْ وَلَيْسَ لَكُمْ إِلاَّ ذَلِكَ " .

This hadith has been narrated on the authority of Bukair b. al-Ashajj with the same chain of transmitters.

حَدَّثَنِي يُونُسُ بْنُ عَبْدِ الأَعْلَى، أَخْبَرَنَا عَبْدُ اللَّهِ بْنُ وَهْبٍ، أَخْبَرَنِي عَمْرُو بْنُ الْحَارِثِ، عَنْ بُكَيْرِ بْنِ الأَشَجِّ، بِهَذَا الإِسْنَادِ مِثْلَهُ .

A'isha (Allah be pleased with her) reported: Messenger of Allah ﷺ heard the voices of altercation of two disputants at the door;
both the voices were quite loud. The one demanded some remission and desired that the other one should show leniency to him, whereupon the (other one) was saying: By Allah will not do that. Then there came Messenger of Allah ﷺ to them and said: Where is he who swears by Allah that he would not do good? He said: Massenger of Allah, it is I. He may do as he desires.

وَحَدَّثَنِي غَيْرُ، وَاحِدٍ، مِنْ أَصْحَابِنَا قَالُوا حَدَّثَنَا إِسْمَاعِيلُ بْنُ أَبِي أُوَيْسٍ، حَدَّثَنِي أَخِي، عَنْ سُلَيْمَانَ، - وَهُوَ ابْنُ بِلاَلٍ - عَنْ يَحْيَى بْنِ سَعِيدٍ، عَنْ أَبِي الرِّجَالِ، مُحَمَّدِ بْنِ عَبْدِ الرَّحْمَنِ أَنَّ أُمَّهُ، عَمْرَةَ بِنْتَ عَبْدِ الرَّحْمَنِ قَالَتْ سَمِعْتُ عَائِشَةَ، تَقُولُ سَمِعَ رَسُولُ اللَّهِ ﷺ صَوْتَ خُصُومٍ بِالْبَابِ عَالِيَةً أَصْوَاتُهُمَا وَإِذَا أَحَدُهُمَا يَسْتَوْضِعُ الآخَرَ وَيَسْتَرْفِقُهُ فِي شَىْءٍ وَهُوَ يَقُولُ وَاللَّهِ لاَ أَفْعَلُ . فَخَرَجَ رَسُولُ اللَّهِ ﷺ عَلَيْهِمَا فَقَالَ " أَيْنَ الْمُتَأَلِّي عَلَى اللَّهِ لاَ يَفْعَلُ الْمَعْرُوفَ " . قَالَ أَنَا يَا رَسُولَ اللَّهِ فَلَهُ أَىُّ ذَلِكَ أَحَبَّ .

Abdullah b. Ka'ab b. Malik reported from his father that he pressed in the mosque Ibn Abu Hadrad for the payment of the debt that he owed to him during the lifetime of Messenger of Allah ﷺ. (In this altercation) their voices became loud, until Messenger of Allah ﷺ heard them, while he was in the house, so Messenger of Allah ﷺ came out towards them, and he lifted the curtain of his apartment and he called upon Ka'b b. Malik and said: O Ka'b. He said: At thy beck and call, Allah's Messenger. He pointed out with the help of his hand to remit half of the loan due to him. Ka'b said: Allah's Messenger, I am ready to do that, whereupon Messenger of Allah ﷺ said (to Ibn Abu Hadrad): Stand up and make him the payment (of the rest).

حَدَّثَنَا حَرْمَلَةُ بْنُ يَحْيَى، أَخْبَرَنَا عَبْدُ اللَّهِ بْنُ وَهْبٍ، أَخْبَرَنِي يُونُسُ، عَنِ ابْنِ شِهَابٍ، حَدَّثَنِي عَبْدُ اللَّهِ بْنُ كَعْبِ بْنِ مَالِكٍ، أَخْبَرَهُ عَنْ أَبِيهِ، أَنَّهُ تَقَاضَى ابْنَ أَبِي حَدْرَدٍ دَيْنًا كَانَ لَهُ عَلَيْهِ فِي عَهْدِ رَسُولِ اللَّهِ ﷺ فِي الْمَسْجِدِ فَارْتَفَعَتْ أَصْوَاتُهُمَا حَتَّى سَمِعَهَا رَسُولُ اللَّهِ ﷺ وَهُوَ فِي بَيْتِهِ فَخَرَجَ إِلَيْهِمَا رَسُولُ اللَّهِ ﷺ حَتَّى كَشَفَ سِجْفَ حُجْرَتِهِ وَنَادَى كَعْبَ بْنَ مَالِكٍ فَقَالَ " يَا كَعْبُ " . فَقَالَ لَبَّيْكَ يَا رَسُولَ اللَّهِ . فَأَشَارَ إِلَيْهِ بِيَدِهِ أَنْ ضَعِ الشَّطْرَ مِنْ دَيْنِكَ . قَالَ كَعْبٌ قَدْ فَعَلْتُ يَا رَسُولَ اللَّهِ . قَالَ رَسُولُ اللَّهِ ﷺ " قُمْ فَاقْضِهِ " .