'Abdullah bin Mas'ud Radiyallahu 'Anhu reports that Rasulullah Sallallahu 'Alayhi Wasallam said:
"The one that has seen me in one's dream, has really seen me, as the shaytaan cannot impersonate me".
Abu Hurayrah Radiyallahu 'Anhu reports that Rasulullah Sallallahu 'Alayhi Wasallam said:
"The one who sees me in one's dream, has actually seen me, because the shaytaan cannot imitate my person".
It is narrated from Abi Maalik AI-Ashja'ee (Sa'eed bin Taariq bin Ash-yam) Radiyallahu 'Anhu that Rasulullah Sallallahu 'Alayhi Wasallam said:
"The one who sees me in ones dream, has seen me"
Kulayb bin Shihaab Al-Kufi says that Abu Hurayrah Radiyallahu 'Anhu narrated to me the mubaarak saying of Rasulullah Sallallahu 'Alayhi Wasallam, that whomsoever sees me in a dream, has really seen me, because the shaytaan cannot impersonate me. Kulayb says, I mentioned this hadith to Ibn 'Abbaas Radiyallahu 'Anhu and also told him that I was blessed with the seeing of Rasulullah Sallallahu 'Alayhi Wasallam in my dream. At that moment I thought of Hasan bin 'Ali Radiyallahu 'Anhu. I said to Ibn 'Abbaas Radiyallahu 'Anhu that I found the image in my dream very similar to that of Hasan Radiyallahu 'Anhu. Ibn 'Abbaas Radiyallahu 'Anhu verified my statement, that truly Hasan Radiyallahu 'Anhu was very similar to Rasulullah Sallallahu 'Alayhi Wasallam in appearance.
Yazeed Al Faarisi bin Hurmuz, who was a calligrapher of the Qur-aan, once saw Rasulullah Sallallahu 'Alayhi Wasallam in his dream during the time of Ibn 'Abbaas Radiyallahu 'Anhu. He related his dream to Ibn 'Abbaas. Ibn 'Abbaas said:
"Rasulullah Sallallahu 'Alayhi Wasallam used to say that the shaytaan cannot imitate him. That person who has seen him in a dream has really seen him'. After mentioning this he asked: 'Can you describe this person whom you have seen in your dream?'. I replied: 'Yes, I can, I will describe to you a man whose body and height were of a medium stature. He had a wheat-coloured complexion with a bit of whiteness in it. Eyes like those that had kuhl on them. A smiling face. Beautiful and round face. A compact beard which surrounded his mubaarak face, and spread on the fore-portion of the chest". 'Awf ibn Abl Jamilah, a narrator of this hadith says: "I do not remember what other feature besides these, my ustaadh Yazeed, who is a narrator of this hadith, described". Ibn 'Abbaas Radiyallahu 'Anhu said: "If you had seen him while being awake, you would not have been able to describe him any further"
Abu Qataadah Radiyallahu 'Anhu reports that Rasulullah Sallallahu 'Alayhi Wasallam said:
"Whomsoever sees me, that is, in a dream, has seen that which is a fact".
Anas Radiyallahu 'Anhu reports that Rasulullah Sallallahu 'Alayhi Wasallam said:
"The one who sees me in a dream has really seen me, because the shaytaan cannot impersonate me". He also said: "A dream of a Muslim (conveyed through an angel) is a portion from the forty six portions of nubuwwah"
'Abdullah bin Mubarak said:
"If one becomes a judge or arbitrator, then they should always follow that which has been narrated."
Ibn Seereen says:
"The knowledge of hadith (in the same manner all other religious subjects) are included in the deen. Therefore before acquiring knowledge, be aware from whom knowledge is acquired".