Hadith Grades
“Sound”. Hadith reported by a trustworthy reporter known for his truthfulness, knowledge, correct way of narrations etc.
“Good”. Hadith whose reporters are known and have solid character but weak memory. (Most of the Hadiths fall under this grade)
“Weak”. Hadith ranking under Hasan (good) because of a shortcoming in the Isnad (Sequence of Reporters).
“Fabricated”. Hadith having wording opposite to the confirmed Prophetic traditions.