Anas ibn Malik reported: The Messenger of Allah, peace and blessings be upon him, said, “Whoever performs our prayer, faces our direction of prayer, and eats our slaughtered animals, they are Muslims under the protection of Allah and His Messenger. Thus, do not betray Allah in the matter of His protection.”
Source: Ṣaḥīḥ al-Bukhārī 391
Grade: Sahih (authentic) according to Al-Bukhari
عَنْ أَنَسِ بْنِ مَالِكٍ قَالَ قَالَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ مَنْ صَلَّى صَلَاتَنَا وَاسْتَقْبَلَ قِبْلَتَنَا وَأَكَلَ ذَبِيحَتَنَا فَذَلِكَ الْمُسْلِمُ الَّذِي لَهُ ذِمَّةُ اللَّهِ وَذِمَّةُ رَسُولِهِ فَلَا تُخْفِرُوا اللَّهَ فِي ذِمَّتِهِ
391 صحيح البخاري كتاب الصلاة أبواب استقبال القبلة باب فضل استقبال القبلة
