Nails grow permanently or human body is covered with a hard layer only on the tips of fingers and toes because only these parts were rinsed with the water of life
| Areal ID | Tradition |
| 10.3.2.3 | Southern and Central; Ryukyu Islands: Yaeyama, Miyako, Okinawa |
| 6.3.2.3 | Stieng, Chrau, Sre (Koho), Maa, Mnong |