Imam Bukhari narrates: Amr bin Abbas narrated to us, he said: Ibn Mahdi narrated to us, he said: Mansur bin Sa'd narrated to us, from Maimun bin Siyah, from Hazrat Anas bin Malik (may Allah be pleased with him), he narrated that the Messenger of Allah ﷺ said:
"Whoever prayed like us, and faced our Qiblah, and ate our slaughtered animal, so this is that Muslim, for whom is the protection of Allah and the protection of His Messenger, so do not violate the protection of Allah."
حَدَّثَنَا عَمْرُو بْنُ عَبَّاسٍ، قَالَ حَدَّثَنَا ابْنُ الْمَهْدِيِّ، قَالَ حَدَّثَنَا مَنْصُورُ بْنُ سَعْدٍ، عَنْ مَيْمُونِ بْنِ سِيَاهٍ، عَنْ أَنَسِ بْنِ مَالِكٍ، قَالَ قَالَ رَسُولُ اللَّهِ صلى الله عليه وسلم " مَنْ صَلَّى صَلاَتَنَا، وَاسْتَقْبَلَ قِبْلَتَنَا، وَأَكَلَ ذَبِيحَتَنَا، فَذَلِكَ الْمُسْلِمُ الَّذِي لَهُ ذِمَّةُ اللَّهِ وَذِمَّةُ رَسُولِهِ، فَلاَ تُخْفِرُوا اللَّهَ فِي ذِمَّتِهِ ".
Reference: Sahih Al Bukhari 391