Narrated Maimun bin Siyah that he asked Anas bin Malik, "O Abu Hamza! What makes the life and property of a person sacred?" He replied, "Whoever says, 'None has the right to be worshipped but Allah', faces our Qibla during the prayers, prays like us and eats our slaughtered animal, then he is a Muslim, and has got the same rights and obligations as other Muslims have."
عَنِ النَّبِيِّ ﷺ وَقَالَ عَلِيُّ بْنُ عَبْدِ اللَّهِ حَدَّثَنَا خَالِدُ بْنُ الْحَارِثِ قَالَ حَدَّثَنَا حُمَيْدٌ قَالَ سَأَلَ مَيْمُونُ بْنُ سِيَاهٍ أَنَسَ بْنَ مَالِكٍ قَالَ يَا أَبَا حَمْزَةَ مَا يُحَرِّمُ دَمَ الْعَبْدِ وَمَالَهُ فَقَالَ مَنْ شَهِدَ أَنْ لاَ إِلَهَ إِلاَّ اللَّهُ وَاسْتَقْبَلَ قِبْلَتَنَا وَصَلَّى صَلاَتَنَا وَأَكَلَ ذَبِيحَتَنَا فَهُوَ الْمُسْلِمُ لَهُ مَا لِلْمُسْلِمِ وَعَلَيْهِ مَا عَلَى الْمُسْلِمِ