The Messenger of Allah ﷺ said, "Indeed, I have been given the Book and along with it something similar to it. Indeed, I have been given the Quran and along with it something similar to it. Soon a man will be reclining on his couch, his belly full, and he will say, 'Stick to the Quran. Whatever you find permitted in it, treat as lawful, and whatever you find forbidden in it, treat as unlawful.' Beware, the flesh of the domestic donkey is not lawful for you, nor is any predator with fangs. Beware, neither is the lost property of a non-Muslim under treaty, unless its owner has no need of it. Whoever stops as a guest with a people, it is incumbent upon them to host him. If they do not host him, he has the right to take from them the equivalent of his due hospitality."
حدثنا يزيد بن هارون قال أخبرنا حريز عن عبد الرحمن بن أبي عوف الجرشي
قال رسول الله ﷺ ألا إني أوتيت الكتاب ومثله معه ألا إني أوتيت القرآن ومثله معه لا يوشك رجل ينثني شبعانا على أريكته يقول عليكم بالقرآن فما وجدتم فيه من حلال فأحلوه وما وجدتم فيه من حرام فحرموه ألا لا يحل لكم لحم الحمار الأهلي ولا كل ذي ناب من السباع ألا ولا لقطة من مال معاهد إلا أن يستغني عنها صاحبها ومن نزل بقوم فعليهم أن يقروهم فإن لم يقروهم فلهم أن يعقبوهم بمثل قراهم
Its isnad is sahih. Hurayz is Ibn Uthman, and Abdul-Rahman bin Abu Awf are both reliable narrators mentioned previously. The hadith was narrated by Abu Dawud, 4/200, no. 4604, and by Baghawi in Sharh al-Sunnah, 1/201.