Fortress of the Muslim
Hisn al-Muslim 255
وَقَالَ صلى الله عليه وسلم: مَنْ قَالَ (لاَ إِلَهَ إِلاَّ اللَّهُ وَحْدَهُ لاَ شَرِيكَ لَهُ، لَهُ الْمُلْكُ، وَلَهُ الْحَمْدُ، وَهُوَ عَلَى كُلِّ شَيْءٍ قَدِيرٌ) عَشْرَ مِرَارٍ، كَانَ كَمَنْ أَعْتَقَ أَرْبَعَةَ أَنْفُسٍ مِنْ وَلَدِ إِسْمَاعِيلَ
The Prophet, peace and blessings be upon him, said that whoever says there is no deity but Allah alone, without partner; His is the dominion and the praise, and He has power over all things, ten times will be like one who freed four persons from the descendants of Ishmael.
Translation notes
كَانَ كَمَنْ أَعْتَقَ أَرْبَعَةَ أَنْفُسٍ مِنْ وَلَدِ إِسْمَاعِيلَ
The witness specifies receiving the reward for freeing four slaves, while this Arabic wording says he is like someone who freed four persons.
Should the witness reward gloss be kept out of the translation or marked as interpretive?