Sayyiduna Abu Umamah (may Allah be pleased with him) said: In the year of Khaybar it was announced among us, with the Messenger of Allah (peace and blessings be upon him): "Every beast of prey with fangs is unlawful, and domestic donkeys are unlawful."
"And indeed Paradise is not lawful for a disobedient one."
Hadith Referenceالمعجم الكبير للطبراني / باب الصاد / 7768