What is the ruling on denouncing someone who acts upon a weak hadith concerning the virtues of deeds? Is what is acted upon considered Sunnah or Mustahabb? Is it permissible for common people to act upon hadiths that have a Takhrij without knowing their degree of authenticity?

Working with weak hadith concerning the virtues of deeds is a matter of disagreement among scholars, and many permit it under certain conditions. It is not permissible to condemn someone who acts upon it, due to its permissibility according to many scholars, and because enjoining good and forbidding evil requires agreement on its prohibition or the preponderant opinion being its prohibition. One of the conditions for acting upon a weak hadith is that it falls under a comprehensive principle. So, whoever acts upon it has acted upon what the principle indicates, and the specific reward is taken from the weak hadith. A student of knowledge is advised to acquire books that focus on authentic hadith, or distinguish it from others, while being keen on scientifically verified editions. If verified books are not available, there is no harm in benefiting from the old books that do not distinguish between authentic and weak hadith, while being keen to ask scholars about their level of evidentiary value. If it is not possible to know the ruling, it is preferable to act upon them and not abandon them, because the original principle is their acceptance.