Chapter on Sales
Man Lā Yaḥḍuruh al-Faqīh|Volume 3|Book 2|Chapter 11
وَ رَوَى اَلْحَسَنُ بْنُ مَحْبُوبٍ عَنْ أَبِي وَلاَّدٍ قَالَ: سَأَلْتُ أَبَا عَبْدِ اَللَّهِ عَلَيْهِ اَلسَّلاَمُ عَنِ اَلرَّجُلِ يَكُونُ لَهُ اَلْغَنَمُ يَحْلُبُهَا لَهَا أَلْبَانٌ كَثِيرَةٌ فِي كُلِّ يَوْمٍ مَا تَقُولُ فِي شِرَاءِ اَلْخَمْسِمِائَةِ رِطْلٍ بِكَذَا وَ كَذَا دِرْهَماً يَأْخُذُ فِي كُلِّ يَوْمٍ مِنْهُ أَرْطَالاً حَتَّى يَسْتَوْفِيَ مَا يَشْتَرِي مِنْهُ قَالَ "لاَ بَأْسَ بِهَذَا وَ نَحْوِهِ".
Al-Hasan bin Mahbub narrated from Abu Wallad who said: I asked Abu Abdillah عليه السلام about a man who owns sheep that produce a large quantity of milk every day. What do you say about purchasing five hundred ritls of milk for a specified amount of dirhams, taking a certain amount from it each day until he fulfills what he purchased? Imam عليه السلام said: "There is no harm in this and similar transactions."
- Ṣaḥīḥ al-Faqīh, p. 229