I heard Abu Umamah Al-Bahil say: “I heard the Messenger of Allah ﷺ say: “The guarantor is responsible and the debt must be repaid.' ”  

سَمِعْتُ رَسُولَ اللَّهِ ﷺ يَقُولُ الزَّعِيمُ غَارِمٌ وَالدَّيْنُ مَقْضِيٌّ  

That during the time of the Messenger of Allah ﷺ, a man pursued a debtor who owed him ten Dinar, and he said: “I do not have anything to give you.” He (the creditor) said: “No, by Allah, I will not leave you until you pay the debt or you bring me a guarantor.” Then he dragged him to the Prophet ﷺ and the Prophet ﷺ said to him: “How long will you wait?” He said: “One month.” The Messenger of Allah ﷺ said: “I will be a guarantor for him.” Then he came to him at the time the Prophet ﷺ had said, and the Prophet ﷺ said to him: “Where did you get this from?” He said: “From a mine.” He said: “There is nothing good in it,” and he paid the debt for him.  

أَنَّ رَجُلاً لَزِمَ غَرِيمًا لَهُ بِعَشَرَةِ دَنَانِيرَ عَلَى عَهْدِ رَسُولِ اللَّهِ ﷺ فَقَالَ مَا عِنْدِي شَىْءٌ أُعْطِيكَهُ فَقَالَ لاَ وَاللَّهِ لاَ أُفَارِقُكَ حَتَّى تَقْضِيَنِي أَوْ تَأْتِيَنِي بِحَمِيلٍ فَجَرَّهُ إِلَى النَّبِيِّ ﷺ فَقَالَ لَهُ النَّبِيُّ ﷺ كَمْ تَسْتَنْظِرُهُ فَقَالَ شَهْرًا فَقَالَ رَسُولُ اللَّهِ ﷺ فَأَنَا أَحْمِلُ لَهُ فَجَاءَهُ فِي الْوَقْتِ الَّذِي قَالَ النَّبِيُّ ﷺ فَقَالَ لَهُ النَّبِيُّ ﷺ مِنْ أَيْنَ أَصَبْتَ هَذَا قَالَ مِنْ مَعْدِنٍ قَالَ لاَ خَيْرَ فِيهَا وَقَضَاهَا عَنْهُ  

“I heard 'Abdullah bin Abu Qatadah narrate from his father that a corpse was brought to the Prophet ﷺ for him to offer the funeral prayer, and he said: 'Pray for your companion, for he owes a debt.' Abu Qatadah said: 'I will stand surely for him?' The Prophet ﷺ said: 'In full?' He said: 'In full.” And the debt he owed was eighteen or nineteen Dirham.”  

أَنَّ النَّبِيَّ ﷺ أُتِيَ بِجِنَازَةٍ لِيُصَلِّيَ عَلَيْهَا فَقَالَ صَلُّوا عَلَى صَاحِبِكُمْ فَإِنَّ عَلَيْهِ دَيْنًا فَقَالَ أَبُو قَتَادَةَ أَنَا أَتَكَفَّلُ بِهِ قَالَ النَّبِيُّ ﷺ بِالْوَفَاءِ قَالَ بِالْوَفَاءِ وَكَانَ الَّذِي عَلَيْهِ ثَمَانِيَةَ عَشَرَ أَوْ تِسْعَةَ عَشَرَ دِرْهَمًا