Narrated from Sa'd ibn Abdullah, from Ayyub ibn Nuh, from Safwan ibn Yahya, from Sa'id ibn Abdullah al-A'raj: I asked Abu Abdillah عليه السلام: “If I trim my nails, my mustache, or shave my head, should I perform ghusl (ritual bathing)?” Imam عليه السلام replied: "No, there is no need for ghusl." I then asked: “Should I perform wudu (ablution)?” Imam عليه السلام said: "No, there is no need for wudu." I further asked: “Should I wipe water over my nails?” Imam عليه السلام said: "No, it is already pure. There is no need to wipe it."