وعليكم السلام ورحمة الله وبركاته
Originally Posted by Amor101
Yes, the Sunnah, which is the words, deeds and approval that are attributed to the Prophet صلى الله عليه وسلم, is a part of the Divine Revelation.
Allaah سبحانه وتعالى says (interpretation of the meaning):
Nor does he speak of (his own) desire. It is only a Revelation revealed. [al-Najm 53:3-4]
It was narrated from al-Miqdaam ibn Ma’di Yakrib رضي الله عنه that the Messenger of Allaah صلى الله عليه وسلم said:
“Verily I have been given the Qur’aan and something similar to it along with it. But soon there will be a time when a man will be reclining on his couch with a full stomach, and he will say, ‘You should adhere to this Qur’aan: what you find that it says is permissible, take it as permissible, and what you find it says is forbidden, take it as forbidden.’ But indeed, whatever the Messenger of Allaah forbids is like what Allaah forbids.”
Narrated by al-Tirmidhi (2664). He said: It is hasan ghareeb with this isnaad. It was classed as hasan by al-Albaani in al-Silsilah al-Saheehah (2870).
Hassaan ibn ‘Atiyah said in al-Kifaayah
Jibreel used to bring the sunnah down to the Prophet صلى الله عليه وسلم as he used to bring the Qur’aan down to him. Narrated by al-Daarimi in his Sunan (588) and by al-Khateeb in al-Kifaayah (12). It was attributed by al-Haafiz in al-Fath (13/291) to al-Bayhaqi, and he said: With a saheeh isnaad.
For more information, have a look at the following links إن شاء الله (the above has been taken from the first one):
Introduction to the Sunnah