Al-Kāfi - Volume 5 > Chapter 28(a) - The Case of Gift to a Creditor
Hadith #2

2- عِدَّةٌ مِنْ أَصْحَابِنَا عَنْ أَحْمَدَ بْنِ مُحَمَّدٍ وَسَهْلِ بْنِ زِيَادٍ عَنِ ابْنِ مَحْبُوبٍ عَنْ هُذَيْلِ بْنِ حَيَّانَ أَخِي جَعْفَرِ بْنِ حَيَّانَ الصَّيْرَفِيِّ قَالَ قُلْتُ لأبِي عَبْدِ اللهِ (عَلَيْهِ السَّلام) إِنِّي دَفَعْتُ إِلَى أَخِي جَعْفَرٍ مَالا فَهُوَ يُعْطِينِي مَا أُنْفِقُهُ وَأَحُجُّ مِنْهُ وَأَتَصَدَّقُ وَقَدْ سَأَلْتُ مَنْ قِبَلَنَا فَذَكَرُوا أَنَّ ذَلِكَ فَاسِدٌ لا يَحِلُّ وَأَنَا أُحِبُّ أَنْ أَنْتَهِيَ إِلَى قَوْلِكَ فَقَالَ لِي أَكَانَ يَصِلُكَ قَبْلَ أَنْ تَدْفَعَ إِلَيْهِ مَالَكَ قُلْتُ نَعَمْ قَالَ فَخُذْ مِنْهُ مَا يُعْطِيكَ فَكُلْ مِنْهُ وَاشْرَبْ وَحُجَّ وَتَصَدَّقْ فَإِذَا قَدِمْتَ الْعِرَاقَ فَقُلْ جَعْفَرُ بْنُ مُحَمَّدٍ أَفْتَانِي بِهَذَا.

2. A number of our people have narrated from Ahmad ibn Muhammad from Sahl ibn Ziyad from ibn Mahbub from Hudhayl ibn Hayyan, brother of Ja’far ibn Hayyan al-Sayrafiy who has said the following: “I once said to abu ‘Abd Allah, Alayhi al-Salam, ‘I have given a certain amount of assets to my brother Ja’far and he gives me what I pay for my expenses, for performing al-Hajj and giving charity. I asked certain people for both of us and they mentioned that it is invalid and unlawful. I like to take your words as the final ones.’ He (the Imam) asked, ‘Did he give you such things before you gave him the assets you just mentioned?’ I replied, ‘Yes, he did so.’ He (the Imam) then said, ‘You can take what he gives you, use it for food, drink, al-Hajj and charity, and when you go back to Iraq tell him that Ja’far ibn Muhammad has given me this fatwa.’”