question #3 Sahih al-Bukhari 3681, Book 62, Hadith 31 : What can be inferred about the relationship between the Prophet Muhammad and Umar from this narration?

Allah’s Messenger (ﷺ) said, “While I was sleeping, I saw myself drinking (i.e. milk), and I was so contented
that I saw the milk flowing through my nails. Then I gave (the milk) to `Umar.” They (i.e. the
companions of the Prophet) asked, “What do you interpret it?” He said, “Knowledge.”