question #1 Sahih al-Bukhari 2337, Book 41, Hadith 18 : What is the significance of receiving divine guidance through dreams in Islam?

While the Prophet (ﷺ) was in Al-`Aqiq he said, “Someone (meaning Gabriel) came to me from my Lord
tonight (in my dream) and said, ‘Offer the prayer in this blessed valley and say (I intend to perform)
`Umra along with Hajj (together).’ ”