The Kyokushin dojo kun was written by Mas Oyama with the help of Eiji Yoshikawa, the author of Mushashu, a book about life and times of Japan's greatest warrior, Miyamoto Mushashi.  The book provided much of Mas Oyama's inspiration during his mountain training days.

At the end of each training session, all students and instructors kneel in seiza in rank order.  The chief instructor the designates someone, usually the most senior student, to recite th oath in the local language.  Each line is recited by the designated person, with pauses at the ends, during which the whole class repeats it.

Kyokushin Dojo Oath:

We will train our hearts and bodies, for a firm unshaken spirit. 

We will pursue the meaning of the Martial Way, so that in time our senses may be alert.

With true vigor, we will seek to cultivate a spirit of self-denial.

We will observe the rules of courtesy, respect our superiors, and refrain from violence.

We will follow our spiritual path, and never forget the true virtue of humility.

We will look upwards to wisdom and strength, not seeking other desires.

All our lives, through the discipline of Karate, will seek to fulfill the true meaning of the Kyokushin Way.

The oath is concluded by the senior student who says the following lines with everyone responding with a bow and resounding "OSU!"

Sosai Oyama ni REI

Hanshi/Shihan/Sensei/ Sempai ni REI ( once for each rank present)

Otagai ni REI

Keiko yame, tatte kudasai

Everyone says together " Domo arigato gozai masita"