Anyone may step on our heads, but shall not trouble this teacher of the Dharma. Neither shall any yakṣa, rākṣasa, hungry spirit, pūtana, kṛtya, vetāda, kumbhāṇḍa, umāraka, apasmāraka, yakṣa-kṛtya or human kṛtya.

An apasmāraka demon enters into a man’s body, making the muscles of the hands and feet twisted, and making him expectorate from the mouth. It is a fever demon. If the demons assume these various forms, [it means that] they have penetrated the sick.