From Pahlavi Texts, by Dastur Japaspji M. Jamaspasa, p. 129.
1.
Innocence.
2.
Discrimination of thoughts, words, and deeds.
3.
Keeping a Dastur (for one's guidance) because a priestly master who is wiser and speaks
very truthfully is versed in the information of the religion, and he teaches more correctly.
4th.
Celebrating the Yasna of the Yazatas with correct words, with (proper) Vâj (or,
utterance), with the text by heart, and with the nirangs (i.e., ritual formulae).
5th.
To be diligent intelligently day and night, fight with one's own fiend, not to depart
from steadfastness in religion for the whole life long, and be diligent in duty.