It was narrated from Salamah bin Al-Muhabbaq that: during the campaign of Tabuk, the Prophet (ﷺ) of Allah called for water from a woman. She said: "I only have a waterskin of mine made from an (unslaughtered) dead animal." He said: "Didn't you tan it?" She said: "Of course." He said: "Then it's tanning is its slaughter". (Daif)
Source: sunnah.com
Other translations
Arabic
أَخْبَرَنَا عُبَيْدُ اللَّهِ بْنُ سَعِيدٍ، قَالَ حَدَّثَنَا مُعَاذُ بْنُ هِشَامٍ، قَالَ حَدَّثَنِي أَبِي، عَنْ قَتَادَةَ، عَنِ الْحَسَنِ، عَنْ جَوْنِ بْنِ قَتَادَةَ، عَنْ سَلَمَةَ بْنِ الْمُحَبِّقِ، أَنَّ نَبِيَّ اللَّهِ صلى الله عليه وسلم فِي غَزْوَةِ تَبُوكَ دَعَا بِمَاءٍ مِنْ عِنْدِ امْرَأَةٍ قَالَتْ مَا عِنْدِي إِلاَّ فِي قِرْبَةٍ لِي مَيْتَةٍ . قَالَ " أَلَيْسَ قَدْ دَبَغْتِهَا " . قَالَتْ بَلَى . قَالَ " فَإِنَّ دِبَاغَهَا ذَكَاتُهَا " .
sunnah.com