Do solid seminal clots adhering to the pubic hair after ghusl constitute a barrier that invalidates the ghusl and necessitates its repetition, and is it permissible to intend to complete the ghusl four hours later?

If the barrier adhering to the hair is from dried remnants of semen, then washing its location with the intention of ghusl (definition) from janabah (definition) is valid. However, he should make up Dhuhr prayer as a precaution, because the Friday prayer was performed with incomplete purification. Everything that prevents water from reaching the skin and hair must be removed, otherwise, the ghusl and prayer are invalid. Some scholars, however, have excused a small amount of barrier. Removing pubic hair is among the practices of fitra that should not be left for more than forty days, and it is best to do it every Friday.