Hadith 1300Q15

قَالَ مَالِكٌ : فِي الْمُكَاتَبِ يُعْتِقُ عَبْدًا لَهُ أَوْ يَتَصَدَّقُ بِبَعْضِ مَالِهِ وَلَمْ يَعْلَمْ بِذَلِكَ سَيِّدُهُ حَتَّى عَتَقَ الْمُكَاتَبُ. قَالَ مَالِكٌ : يَنْفُذُ ذَلِكَ عَلَيْهِ وَلَيْسَ لِلْمُكَاتَبِ أَنْ يَرْجِعَ فِيهِ فَإِنْ عَلِمَ سَيِّدُ الْمُكَاتَبِ قَبْلَ أَنْ يَعْتِقَ الْمُكَاتَبُ فَرَدَّ ذَلِكَ وَلَمْ يُجِزْهُ فَإِنَّهُ إِنْ عَتَقَ الْمُكَاتَبُ وَذَلِكَ فِي يَدِهِ لَمْ يَكُنْ عَلَيْهِ أَنْ يُعْتِقَ ذَلِكَ الْعَبْدَ وَلَا أَنْ يُخْرِجَ تِلْكَ الصَّدَقَةَ إِلَّا أَنْ يَفْعَلَ ذَلِكَ طَائِعًا مِنْ عِنْدِ نَفْسِهِ.
Imam Malik, may Allah have mercy on him, said that if a mukatab frees his slave, or gives some of his wealth in charity, and the master is not informed of this until the mukatab becomes free, then after his freedom, the mukatab cannot invalidate that charity or emancipation. However, if the master is informed of it before the mukatab's freedom and does not give permission, then that charity or emancipation becomes void. In this case, it is not obligatory for the mukatab to free that slave again or give charity after his freedom, but he may do so willingly.
Hadith Reference موطا امام مالك رواية يحييٰ / كتاب المكاتب / 1300Q15
Hadith Takhrij «فواد عبدالباقي نمبر: 39 - كِتَابُ الْمُكَاتَبِ-ح: 15ق1»