The apostle of allah ﷺ forbade drinking from the mouth of a water-skin, and riding the animal which feeds on filth and eating the animal which is killed in confinement. Abu Dawud said: Jallalah means an animal which eats filth and impurities.  

نَهَى رَسُولُ اللَّهِ ﷺ عَنِ الشُّرْبِ مِنْ فِي السِّقَاءِ وَعَنْ رُكُوبِ الْجَلاَّلَةِ وَالْمُجَثَّمَةِ