The bodhisattvas of The Inquiry of Ugra are uniformly wilderness dwellers, only occasionally visiting the greater sangha in order to hear the Dharma.

In discussing the virtues of dwelling in the wilderness, The Inquiry of Ugra offers this:

“O Eminent Householder, if one asks what is the renunciant bodhisattva’s śramaṇa-aim, it is the following: it is mindfulness and clear consciousness, being undistracted, attaining the dhārāṇis, not being satisfied with what he has learned, having attained eloquence in speech, relying on loving-kindness and compassion, having mastery of the paranormal powers, fulfilling the cultivation of the six perfections, not abandoning the spirit of Omniscience, cultivating the knowledge of skillful means, maturing sentient beings, not abandoning the four means of attraction, being mindful of the six kinds of remembrance, not discarding learning and exertion, properly analyzing the dharmas, exerting oneself in order to attain right liberation, knowing the attainments of the fruit, dwelling in the state of having entered into a fixed course, and protecting the True Dharma.

“It is having right view, by having confidence in the maturing of deeds; having right intention, which consists in the cutting off of all discursive and divisive thought; having right speech, which consists of teaching the Dharma in accordance with the receptivity [of others]; having right action, by completely annihilating action; having right livelihood, by overcoming the residue of attachments; having right effort, by awakening to sambodhi; having right mindfulness, by constant non-forgetfulness; and having right absorption, by fully attaining the knowledge of Omniscience.

“It is not being frightened by emptiness, not being intimidated by the signless, and not being overpowered by the wishless, and being able through one’s knowledge to be reborn at will. It is relying on the meaning, not on the letter; relying on knowledge, not on discursive consciousness; relying on the Dharma, not on the person; and relying on the definitive sūtras, not on the sūtras that must be interpreted. In accord with the primordially non-arising and non-ceasing nature of things, it is not mentally constructing an essence of things—that, O Eminent Householder, is what is called the śramaṇa-aim of the renunciant bodhisattva.

A Few Good Men, p291-294

Note the admonition about “relying on the meaning, not on the letter; relying on knowledge, not on discursive consciousness; relying on the Dharma, not on the person; and relying on the definitive sūtras, not on the sūtras that must be interpreted.”

These instructions are also found in the Nirvāṇa Sūtra, where Nichiren read them as validating the Lotus Sutra as the highest teaching of the Buddha.

The Nirvana Sūtra declares, “Rely on the dharma, not on the man; rely on the wisdom, not on the knowledge.” “Rely on the dharma” in this passage means to rely on the eternal dharma preached in the Lotus-Nirvana sūtras. “Rely not on the man” means not to rely on those who do not believe in the Lotus-Nirvana sūtras. Those who do not have faith in the Lotus Sūtra, even Buddhas and bodhisattvas, are not “good friends” (reliable teachers) for us in the Latter Age, not to mention commentators, translators and teachers after the extinction of the Buddha who do not believe in the Lotus-Nirvana Sūtras. “Rely on the wisdom” means to rely on the wisdom of the Buddha. “Rely not on the knowledge” means not to rely on the opinions of bodhisattvas in the highest stage and below.

Shugo Kokka-ron, Treatise on Protecting the Nation, Writings of Nichiren Shōnin, Doctrine 1, Pages 59-60

The Inquiry of Ugra also offers an alternate set of bodhisattva vows. Compares these with the Four Great Vows promulgated by the founder of the Tiantai school and adopted by Nichiren:

“Who, in order to take care of, comfort, and protect all beings, seek the armor [of the bodhisattva]; who for the benefit of all beings take on the great burden, vowing:

The unrescued I will rescue.
The unliberated I will liberate.
The uncomforted I will comfort.
Those who have not yet reached parinirvāṇa, I will cause to attain parinirvāṇa

Finally, The Inquiry of Ugra includes this tip for the bodhisattva that I hope to keep in mind:

Without deception or artifice, he never tires of searching for what is lovable and virtuous in all beings. He is never satisfied with how much he has learned.

A Few Good Men, p226