Holding Fast to the Qur'an and Sunnah

Bukhari :: Book 9 :: Volume 92 :: Hadith 442

Narrated 'Umar:

The Prophet said to me, "Someone came to me tonight from my Lord while I was in the 'Aqiq (valley), and said to me, "Offer prayer in this blessed valley and say: 'Labbaik' for the (performance of) 'Umra and Hajj."