Praise be to Allaah, the Lord of the Worlds, and peace and blessings of Allaah be upon the Master of the Prophets and Messengers, and upon all his family and companions.

The Prophet (saas) (peace and blessings of Allaah be upon him) used to teach the Sunnah to his companions in word and deed, and urged them to follow it, as he said in his hadeeth: “Adhere to my Sunnah” and “Whoever neglects my Sunnah does not belong to me.” ‘Abd-Allaah ibn Mas’ood (may Allaah be pleased with him) narrated that the Messenger of Allaah (saas) (peace and blessings of Allaah be upon him) said: “There is no Prophet whom Allaah sent to any nation before me, but he had disciples from among his nation, and companions who followed his Sunnah and obeyed his commands.” (Narrated by Muslim, no. 71).

Some aspects of the Sunnah are waajib (obligatory) and some are mustahabb (encouraged). The Muslim should follow the Sunnah of the Prophet (saas) (peace and blessings of Allaah be upon him), whether it is waajib or mustahabb, as long as it is proven in sound reports. The Sahaabah (may Allaah be pleased with them) used to spread the Sunnah of the Prophet (saas) (peace and blessings of Allaah be upon him) among people and they called people to follow it.