Passing wet fingers through the beard while performing Wudu'

Q: Is it obligatory, when combing the beard from underneath with wet fingers during Wudu' (ablution), to let the water reach the skin underneath the beard?

(Part No. 5; Page No. 207) A: All praise be to Allah Alone, and peace and blessings be upon His Messenger, and his family and Companions. It is Wajib (obligatory) to wash the outside of a thick beard, but not the inside or the skin underneath it, but it is lawful to comb it from underneath with wet fingers. Al-Nawawy (may Allah be merciful to him) said, “There is no disagreement among the scholars that it is obligatory to wash a thick beard, but it is not obligatory to wash the inside or the skin underneath it by agreement. This is the opinion of the dominant majority of scholars from among the Sahabah (Companions of the Prophet), the Tabi‘un (Followers, the generation after the Companions), and those who came after them.” Ibn Rushd said, “This is a matter concerning which I do not know of any disagreement.” On the other hand, it is obligatory to wash the inside and outside of a light beard if the skin can be seen from underneath it.May Allah grant us success. May peace and blessings be upon our Prophet Muhammad, his family, and Companions.