Answer
Praise be to Allaah.
His wudoo’ is valid, because uncovering the ‘awrah or wearing shorts does not invalidate his wudoo’, but it is haraam for him to uncover his ‘awrah in front of anyone except his wife or concubine (a slave woman who belongs to him and with whom he is permitted to have intercourse).
Source: Fataawa al-Lajnah al-Daa’imah, 5/235
Comment