حَدَّثَنَا أَبُو الْوَلِيدِ الطَّيَالِسِيُّ، حَدَّثَنَا زَائِدَةُ، عَنْ الشَّيْبَانِيِّ، عَنْ الشَّعْبِيِّ، قَالَ: "يُغَيِّرُ صَاحِبُ الْوَصِيَّةِ مِنْهَا مَا شَاءَ، غَيْرَ الْعَتَاقَةِ".
It is narrated from al-Shaybani (Sulaiman bin Abi Sulaiman): Imam Sha'bi, may Allah have mercy on him, said: The one making a bequest may alter whatever he wishes in the bequest except for emancipation (in that, there can be no alteration).