حَدَّثَنَا مُوسَى بْنُ إِسْمَاعِيلَ، حَدَّثَنَا حَمَّادٌ، أَخْبَرَنَا قَتَادَةُ، عَنْ عِكْرِمَةَ، عَنِ ابْنِ عَبَّاسٍ، قَالَ نَهَى رَسُولُ اللَّهِ صلى الله عليه وسلمعَنِ الشُّرْبِ مِنْ فِي السِّقَاءِ وَعَنْ رُكُوبِ الْجَلاَّلَةِ وَالْمُجَثَّمَةِ ‏.‏قَالَ أَبُو دَاوُدَ الْجَلاَّلَةُ الَّتِي تَأْكُلُ الْعَذِرَةَ

Ibn Abbas said

The Messenger of Allah (may Allah bless him and grant him peace) forbade drinking directly from the mouth of a water skin, riding a jallalah (an animal that eats filth), and al-mujaththamah.

Abu Dawud said: The jallalah is that which eats filth.