Is ghusl obligatory for a virgin if she found a small amount of semen and cannot recall whether it was inside or outside the vaginal opening?

The Hanbalis obligate ghusl (ritual bath) upon the movement of semen, even if it does not exit, whereas the majority do not obligate it unless it exits to the exterior of the vulva, and this is the more correct opinion. A virgin must see it on the exterior of the vulva. In case of doubt regarding its exit to the exterior of the vulva, the original principle is the acquittal of responsibility and the non-obligation of ghusl.