Sahih al-Bukhari, Volume 3, Book 39, Hadith 529 (USC-MSA) ⓘ

Narrated `Abdullah bin `Umar: While the Prophet was passing the night at his place of rest in Dhul-Hulaifa in the bottom of the valley (of Aqiq), he saw a dream and it was said to him, "You are in a blessed valley." Musa said, "Salim let our camels kneel at the place where `Abdullah used to make his camel kneel, seeking the place where Allah's Messenger used to take a rest, which is situated below the mosque which is in the bottom of the valley; it is midway between the mosque and the road."

حَدَّثَنَا قُتَيْبَةُ، حَدَّثَنَا إِسْمَاعِيلُ بْنُ جَعْفَرٍ، عَنْ مُوسَى بْنِ عُقْبَةَ، عَنْ سَالِمِ بْنِ عَبْدِ اللَّهِ بْنِ عُمَرَ، عَنْ أَبِيهِ ـ رضى الله عنه ـ أَنَّ النَّبِيَّ صلى الله عليه وسلم أُرِيَ وَهْوَ فِي مُعَرَّسِهِ مِنْ ذِي الْحُلَيْفَةِ فِي بَطْنِ الْوَادِي، فَقِيلَ لَهُ إِنَّكَ بِبَطْحَاءَ مُبَارَكَةٍ‏.‏ فَقَالَ مُوسَى وَقَدْ أَنَاخَ بِنَا سَالِمٌ بِالْمُنَاخِ الَّذِي كَانَ عَبْدُ اللَّهِ يُنِيخُ بِهِ، يَتَحَرَّى مُعَرَّسَ رَسُولِ اللَّهِ صلى الله عليه وسلم وَهْوَ أَسْفَلُ مِنَ الْمَسْجِدِ الَّذِي بِبَطْنِ الْوَادِي، بَيْنَهُ وَبَيْنَ الطَّرِيقِ وَسَطٌ مِنْ ذَلِكَ‏.‏