Sahih Muslim 1365
Sahih Muslim · Book 15: The Book of Pilgrimage · The virtue of Al-Madinah and the Prophet's Prayer for it to be blessed. Its sanctity and the sanctity of its game and trees. The Boundaries of its sanctuary
Anas b. Malik reported a hadith like this from Allah's Apostle (ﷺ) except with this variation that he said:
وَحَدَّثَنَاهُ سَعِيدُ بْنُ مَنْصُورٍ ، وَقُتَيْبَةُ بْنُ سَعِيدٍ ، قَالاَ حَدَّثَنَا يَعْقُوبُ، - وَهُوَ ابْنُ عَبْدِ الرَّحْمَنِ الْقَارِيُّ - عَنْ عَمْرِو بْنِ أَبِي عَمْرٍو ، عَنْ أَنَسِ بْنِ مَالِكٍ ، عَنِ النَّبِيِّ صلى الله عليه وسلم . بِمِثْلِهِ غَيْرَ أَنَّهُ قَالَ " إِنِّي أُحَرِّمُ مَا بَيْنَ لاَبَتَيْهَا " .
" I declare sacred the area between its two lava mountains."