Ibn ‘Umar told that God's messenger prohibited eating the animal which feeds on filth or drinking its milk. Trimidhi transmitted it. In Abu Dawud’s version he said that he forbade riding the animal which feeds on filth.

وَعَنِ ابْنِ عُمَرَ قَالَ: نَهَى رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ عَنْ أَكْلِ الْجَلَّالَةِ وَأَلْبَانِهَا. رَوَاهُ التِّرْمِذِيُّ وَفِي رِوَايَةِ أَبِي دَاوُدَ: قَالَ: نُهِيَ عَنْ ركوبِ الْجَلالَة