a. Hadith which Rasulullah (Sallallahu Alaihi Wasallam) quotes from Allah Ta’ala
b. Hadith which includes some statements or acts of some of the companions of RasulAllah (Sallallahu Alaihi Wasallam)
c. Hadith which describes something about the physical, spiritual, or states of RasulAllah
d. Hadith which is not attributed to RasulAllah (Sallallahu Alaihi Wasallam) directly