Sayyiduna Abu Hurayrah (may Allah be pleased with him) narrates that the Prophet (peace and blessings be upon him) said: "The Sunnah is of two kinds: a Sunnah connected to an obligation, and a Sunnah connected to other than an obligation. The Sunnah connected to an obligation has its basis in the Book of Allah; adopting it is guidance and abandoning it is misguidance. The Sunnah whose basis is not in the Book of Allah, adopting it is a virtue (i.e., recommended), and abandoning it is not a sin."
Al-Tabarani recorded it in al-Mu'jam al-Awsat and said: No one narrated it from Abu Salamah except Isa bin Waqid, and the narrator Abdullah bin al-Rumi is alone in narrating it. I have not seen anyone who has written his biography.
Hadith Referenceمجمع الزوائد ومنبع الفوائد / كتاب العلم / 799
Hadith Gradingمحدثین:إسنادہ ضعیف
Hadith Takhrij«اخرجه الامام الطبراني فى معجمه الأوسط 4011»