Imām al-Nawawī states in Sharḥ Arbaʿīn: “The ḥuffaẓ of Ḥadīth and scholars of the religion agree that in virtues of deeds, it is permissible to act upon a ḍaʿīf Ḥadīth.” [Sharh Arbaʿīn al-Nawawī, page 4]