What is to be done if scholars differ on authenticating or weakening a hadith?

Hadith scholars differ in their rulings on hadiths. A student of knowledge who possesses the ability to weigh and prefer should act upon what he deems preponderant. As for the beginner or the layman, he must follow the opinion of an imam whom he trusts. Leniency is shown regarding weak hadiths related to virtues, unlike those concerning beliefs, lawful acts (halal), and forbidden acts (haram). It is important to note that one should not accept anyone's word in terms of authentication or weakening of hadiths except for the imams known for their mastery of this science. They must avoid those who make baseless claims.