Chapter on Endowments, Charity, and Gifts
Man Lā Yaḥḍuruh al-Faqīh|Volume 4|Book 1|Chapter 127
وَ رَوَى عَلِيُّ بْنُ مَهْزِيَارَ قَالَ: قُلْتُ لَهُ رَوَى بَعْضُ مَوَالِيكَ عَنْ آبَائِكَ عَلَيْهِمُ اَلسَّلاَمُ "أَنَّ كُلَّ وَقْفٍ إِلَى وَقْتٍ مَعْلُومٍ فَهُوَ وَاجِبٌ عَلَى اَلْوَرَثَةِ وَ كُلَّ وَقْفٍ إِلَى غَيْرِ وَقْتٍ جَهْلٌ مَجْهُولٌ بَاطِلٌ مَرْدُودٌ عَلَى اَلْوَرَثَةِ" وَ أَنْتَ أَعْلَمُ بِقَوْلِ آبَائِكَ عَلَيْكَ وَ عَلَيْهِمُ اَلسَّلاَمُ فَكَتَبَ عَلَيْهِ اَلسَّلاَمُ "هُوَ هَكَذَا عِنْدِي".
Ali ibn Mahziyar narrated that he said: I asked Imam عليه السلام: "Some of your followers have narrated from your forefathers, peace be upon them, that every endowment (waqf) specified for a known period is binding upon the heirs, but any endowment without a specified period is unclear, invalid, and rejected by the heirs. You عليه السلام are more knowledgeable about the sayings of your forefathers, peace be upon them." Imam عليه السلام wrote in response: "It is as you have mentioned according to my understanding."
- Ṣaḥīḥ al-Faqīh