Q. If one performs ghusl in the morning and prays Fajr, Dhuhr, Asr and later on he notices during playing with his beard during the day there is one knot in just one of his beard hair. Is his ghusl and thereby also his salaats valid?
A. His ghusl is valid, and hence all the Salaats are valid.
And Allah knows best.
Mufti Waseem Khan