It was narrated from 'Abdullah bin Abi Qatadah, from his father, that a man from among the Ansar was brought to the prophet for him to offer the funeral prayer, and he said: "Your companion owes a debt. " Abu Qutdah said: "I will guarantee it for him. "The prophet said: "In full?" He said: "In full." (Sahah)
Source: sunnah.com
Other translations
Arabic
أَخْبَرَنَا مُحَمَّدُ بْنُ عَبْدِ الأَعْلَى، قَالَ حَدَّثَنَا خَالِدٌ، قَالَ حَدَّثَنَا شُعْبَةُ، عَنْ عُثْمَانَ بْنِ عَبْدِ اللَّهِ بْنِ مَوْهَبٍ، عَنْ عَبْدِ اللَّهِ بْنِ أَبِي قَتَادَةَ، عَنْ أَبِيهِ، أَنَّ رَجُلاً، مِنَ الأَنْصَارِ أُتِيَ بِهِ النَّبِيُّ صلى الله عليه وسلم لِيُصَلِّيَ عَلَيْهِ فَقَالَ " إِنَّ عَلَى صَاحِبِكُمْ دَيْنًا " . فَقَالَ أَبُو قَتَادَةَ أَنَا أَتَكَفَّلُ بِهِ . قَالَ " بِالْوَفَاءِ " . قَالَ بِالْوَفَاءِ .
sunnah.com