Caution: Translations of Quran and Ḥadīth may lead to possible misapplications and misinterpretations. This site is intended for students of sacred knowledge that are proficient in comprehending classical Arabic and have a strong foundation in Islamic sciences. Also note that religious injunctions rely on several aspects beyond what one may glean through reading individual aḥādīth.
bayhaqi:1088al-Walīd > Saʿīd > Qatādah

[Machine] The bandages and splints should not be placed on the wound or fracture if it is in the area of ablution until he performs ablution for prayer, and washes the area of that wound because blood has appeared from it.  

البيهقي:١٠٨٨وَبِإِسْنَادِهِ قَالَ ثنا الْوَلِيدُ عَنْ سَعِيدٍ عَنْ قَتَادَةَ قَالَ

لَا تُوضَعُ الْعَصَائِبُ وَالْجَبَائِرُ عَلَى الْجُرْحِ وَالْكَسْرِ إِذَا كَانَ فِي مَوْضِعِ الْوُضُوءِ حَتَّى يَتَوَضَّأَ وُضُوءَهُ لِلصَّلَاةِ وَيَغْسِلُ مَوْضِعَ ذَلِكَ الْجُرْحِ لِمَا ظَهَرَ مَنْ دَمِهِ