He should then clean the folds of his body, after which he pours water over his head, running his fingers through the hair. Next he washes his right side, then his left, rubbing the body and repeating each wash three times. A woman traces the place affected by her menses with musk; if musk is unavailable, she uses something similar. Unlike ablution, it is not recommended to renew the full bath without need. It is recommended that the water for ablution not be less than one mudd and that for the bath not less than one saʿ, though there is no upper limit. If someone has filth on his body, he must first wash it away and then perform the ghusl; one washing does not suffice for both acts, and the same rule applies in ablution.
I say: the sounder view is that a single washing does suffice, and Allah knows best.
Whoever performs a bath intending both the removal of janābah and the Friday bath obtains the reward of both; if he intends only one of them, he attains only that. I add: should a person fall into minor impurity and then become junub, or the reverse, one ghusl is enough according to the authoritative position, and Allah knows best.