Al-Kāfi
Hadith 1605- ابْنُ مَحْبُوبٍ عَنْ أَبِي وَلادٍ قَالَ سَأَلْتُ أَبَا عَبْدِ اللهِ (عَلَيْهِ السَّلام) عَنْ رَجُلٍ مَرِيضٍ أَقَرَّ عِنْدَ الْمَوْتِ لِوَارِثٍ بِدَيْنٍ لَهُ عَلَيْهِ قَالَ يَجُوزُ ذَلِكَ قُلْتُ فَإِنْ أَوْصَى لِوَارِثٍ بِشَيْءٍ قَالَ جَائِزٌ.
5. Ibn Mahbub has narrated from abu Wallad who has narrated the following: “I once asked abu ‘Abd Allah (a.s.), about the case of a man who in his illness at the time of his death confirms his owing a certain amount of debts to one of his heirs. He (the Imam) said, ‘It is permissible.’ I asked about his confirming his owing ‘something’ to one of his heirs. He (the Imam) said, ‘It is permissible.’”