[Machine] The Messenger of Allah ﷺ said, "The one who is enslaved will be given freedom according to the ransom paid for the free person, and the one who is enslaved will be given freedom according to the ransom paid for the slave."  

أَنَّ رَسُولَ اللهِ ﷺ قَالَ «يُؤَدِّي الْمُكَاتَبُ بِقَدْرِ مَا عَتَقَ مِنْهُ دِيَةَ الْحُرِّ وَبِقَدْرِ مَا رَقَّ مِنْهُ دِيَةَ الْعَبْدِ»  

the Prophet of Allah ruled that the Diyah for a Mukatab should be (equivalent) to the Diyah for a free man, proportionate to the amount he had paid off (toward buying his freedom). (Using translation from Nasāʾī 4809)   

أَنَّ رَسُولَ اللهِ ﷺ «قَضَى فِي الْمُكَاتَبِ أَنْ يُؤَدِّيَ بِقَدْرِ مَا عَتَقَ مِنْهُ دِيَةَ الْحُرِّ»