Mishkat al-Masabih 19 Jihad كتاب الجهاد 136

وَعَنْ أَبِي هُرَيْرَةَ قَالَ: قَالَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ: «لَا تَصْحَبُ الْمَلَائِكَةُ رُفْقَةً فِيهَا جِلْدُ نَمِرٍ» . رَوَاهُ أَبُو دَاوُدَ

Abu Huraira reported God’s Messenger as saying, “The angels do not go with a travelling company in which there is a panther skin.” Abu Dawud transmitted it.