"The Messenger of Allah wrote to us: 'Do not make use of the skins and sinew of dead animals."' (Using translation from Nasāʾī 4250)   

كَتَبَ إِلَيْنَا رَسُولُ اللهِ ﷺ أَنْ لَا تَسْتَمْتِعُوا مِنَ الْمَيْتَةِ بِإِهَابٍ وَلَا عَصَبٍ  

[Machine] The Messenger of Allah ﷺ prohibited the use of the skins of animals.  

أَنَّ رَسُولَ اللهِ ﷺ نَهَى عَنْ جُلُودِ السِّبَاعِ  

[Machine] The Messenger of Allah ﷺ said, "If a dog licks the utensil of one of you, let him pour out its contents and then wash it seven times."  

قَالَ رَسُولُ اللهِ ﷺ إِذَا وَلَغَ الْكَلْبُ فِي إِنَاءِ أَحَدِكُمْ فَلْيُهْرِقْهُ ثُمَّ لِيَغْسِلْهُ سَبْعَ مَرَّاتٍ  

[Machine] That the Prophet (PBUH) said: "The price of a dog is impure, and it is impurer than him (referring to the person). Yusuf ibn Khalid, the blacksmith, is the most reliable of them."  

أَنَّ النَّبِيَّ ﷺ قَالَ ثَمَنُ الْكَلْبِ خَبِيثٌ وَهُوَ أَخْبَثُ مِنْهُ يُوسُفُ بْنُ خَالِدٍ هُوَ السَّمْتِيُّ غَيْرُهُ أَوْثَقُ مِنْهُ