Sahih Bukhari | Volume 3 | Hadith Number 529

Narrated by '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 Apostle 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."