Al-Kāfi - Volume 7 > The Matters Permissible in Endowment, Charity, Gift, Present, Providing Conditional Housing and Matters Permissible or otherwise for a Child and others
Hadith #36

36- مُحَمَّدُ بْنُ يَحْيَى عَنْ أَحْمَدَ بْنِ مُحَمَّدٍ وَأَبُو عَلِيٍّ الأشْعَرِيُّ عَنْ مُحَمَّدِ بْنِ عَبْدِ الْجَبَّارِ جَمِيعاً عَنْ صَفْوَانَ بْنِ يَحْيَى عَنْ أَبِي الْحَسَنِ (عَلَيْهِ السَّلام) قَالَ سَأَلْتُهُ عَنِ الرَّجُلِ يُوقِفُ الضَّيْعَةَ ثُمَّ يَبْدُو لَهُ أَنْ يُحْدِثَ فِي ذَلِكَ شَيْئاً فَقَالَ إِنْ كَانَ أَوْقَفَهَا لِوُلْدِهِ وَلِغَيْرِهِمْ ثُمَّ جَعَلَ لَهَا قَيِّماً لَمْ يَكُنْ لَهُ أَنْ يَرْجِعَ فِيهَا وَإِنْ كَانُوا صِغَاراً وَقَدْ شَرَطَ وَلايَتَهَا لَهُمْ حَتَّى يَبْلُغُوا فَيَحُوزَهَا لَهُمْ لَمْ يَكُنْ لَهُ أَنْ يَرْجِعَ فِيهَا وَإِنْ كَانُوا كِبَاراً لَمْ يُسَلِّمْهَا إِلَيْهِمْ وَلَمْ يُخَاصِمُوا حَتَّى يَحُوزُوهَا عَنْهُ فَلَهُ أَنْ يَرْجِعَ فِيهَا لأنَّهُمْ لا يَحُوزُونَهَا عَنْهُ وَقَدْ بَلَغُوا.

36. Muhammad ibn Yahya has narrated from Ahmad ibn Muhammad and Abu Ali al-Ash‘ariy has narrated from Muhammad ibn ‘Abd al-Jabbar all from Safwan ibn Yahya who has narrated the following: “I once asked abu al-Hassan, ‘Alayhi al-Salam, about the case of a man who makes a piece of his property an endowment, then decides to change it. He (the Imam) said, ‘If he has made it an endowment for his children and others and then appoints a supervisor for it, he cannot change it. If they are small and he has set a condition that the supervision will rest with them until they mature and so he has taken possession for them in this case also he cannot change it. If they are mature but he has not given it to them and they do not dispute with him until they take possession from him, then he can change it because they have not taken possession from him while they are mature.’”