I heard Allah's Messenger (ﷺ) saying, "While I was sleeping, I saw (in a dream) the people being displayed before me, wearing shirts, some of which (were so short that it) reached as far as their breasts and some reached below that. Then `Umar bin Al-Khattab was shown to me and he was wearing a shirt which he was dragging (behind him)." They asked. What have you interpreted (about the dream)? O Allah's Messenger (ﷺ)?" He said, "The religion."
Sahih al-Bukhari Book 91, Hadith 27
← Previous Hadith Allah's Messenger (ﷺ) said, "While I was sleeping, some people were displayed before me (in a dream). They were wearing shirts, some of which were merely covering their breasts, and some a bit longer. Then there passed before me, `Umar bin Al-Khattab wearing a shirt he was dragging it (on the ground behind him.)" They (the people) asked, "What have you interpreted (about the dream) O Allah's Apostle?" He said, "The Religion."

Sahih al-Bukhari Book 91, Hadith 26 Next Hadith → I was sitting in a gathering in which there was Sa`d bin Malik and Ibn `Umar. `Abdullah bin Salam passed in front of them and they said, "This man is from the people of Paradise." I said to `Abdullah bin Salam, "They said so-and-so." He replied, "Subhan Allah! They ought not to have said things of which they have no knowledge, but I saw (in a dream) that a post was fixed in a green garden. At the top of the post there was a handhold and below it there was a servant. I was asked to climb (the post). So I climbed it till I got hold of the handhold." Then I narrated this dream to Allah's Messenger (ﷺ). Allah's Apostle said, "`Abdullah will die while still holding the firm reliable handhold (i.e., Islam).

Sahih al-Bukhari Book 91, Hadith 28