وَعَنْ أَبِي ثَعْلَبَةَ الْخُشَنِيِّ رضى الله عنه
قَالَ: «قُلْتُ: يَا رَسُولَ الْلَّهِ، إِنَّا بِأَرْضِ قَوْمٍ أَهْلِ كِتَابٍ، أَفَنَأْكُلُ فِي آنِيَتِهِمْ؟]فـَ] قَالَ: «لَا تَأْكُلُوا فِيهَا، إِلَّا أَنْ لَا تَجِدُوا غَيْرَهَا، فَاغْسِلُوهَا، وَكُلُوا فِيهَا»
Narrated (rad): I said “O Messenger of Allah! We are living in a land inhabited by the people of the Scriptures; can we take our meals in their utensils?” He said, “If you can get utensils other than theirs, do not eat in theirs, but if you cannot get other than theirs, wash them and eat in them”.
Bulugh al-Maram 25, Book 1, The Book of Purification, Hadith 25. 1 min read