Again, as reported by al-Bukhaari, “The hadeeth of Anas ibn Maalik says: ‘He set us a time limit of no more than forty days for trimming the moustache, clipping the nails, plucking the armpit hairs and shaving the pubic hair.”
Al-Bukhaari notes that the purpose is to be completely clean and pure and keep away from anything that may cause dirt and impurities to cling to the body.
Medically, shaving the pubic hair makes for better hygiene.
“Shaving off the pubic hair will make for better hygiene down there, as an adult person’s privates is a focal point for heat, sweat and bacteria. So, shaving will make it look neat and smell fresh,” physicians advise.