question #1 Sahih al-Bukhari 1534, Book 25, Hadith 22 : What is the significance of receiving divine messages in dreams according to Islamic teachings?

In the valley of Al-`Aqiq I heard Allah’s Messenger (ﷺ) saying, “To night a messenger came to me from my
Lord and asked me to pray in this blessed valley and to assume Ihram for Hajj and `Umra together. ”