[Machine] He paid him its price and instructed him to fix it and take care of it. If he spoiled it after being prevented from doing so, it is prohibited because the Prophet ﷺ prohibited wastefulness of wealth and said to the one who is deceived in a transaction: "If you have made a contract, then say 'no remorse'." And the Prophet ﷺ did not take any of his money.

فَدَفَعَ ثَمَنَهُ إِلَيْهِ، وَأَمَرَهُ بِالإِصْلاَحِ وَالْقِيَامِ بِشَأْنِهِ، فَإِنْ أَفْسَدَ بَعْدُ مَنَعَهُ، لأَنَّ النَّبِيَّ ﷺ نَهَى عَنْ إِضَاعَةِ الْمَالِ، وَقَالَ لِلَّذِي يُخْدَعُ فِي الْبَيْعِ: «إِذَا بَايَعْتَ فَقُلْ لاَ خِلاَبَةَ». وَلَمْ يَأْخُذِ النَّبِيُّ ﷺ مَالَهُ.