One deity, one mantra, and one practice.

One deity, Chenrezi, embodies all Buddhas;

One mantra, the six syllables, embodies all mantras;

One Dharma, bodhichitta, embodies all practices of the development and completion stages.

Knowing the one which liberates all, recite the six-syllable mantra.

The Buddha Shākyamuni himself is an emanation of Chenrezi; the Dharma, which shows us what to avoid and what to cultivate, is perfectly contained in the six-syllable mantra; the Saṅgha, the Bodhisattvas who help us along the path, are emanations of Chenrezi as well. Chenrezi is thus the union of the Three Jewels. Just as one reservoir collects countless drops of rain, Chenrezi’s compassion includes all the wisdom of Mañjushrī and all the power of Vajrapāṇi. With this one deity, one mantra, and one practice, you can accomplish everything.

The many deities are infinitely diverse: peaceful or wrathful, with one, three, or many heads, and with two, four, six, or many more arms, each one symbolizing a different quality. Yet you can be confident that all of them are included in Chenrezi. In the same way, since all the beneficial power of the immense variety of other mantras is contained in the six-syllable mantra by itself, you can put all your heart into reciting just the one mantra. Your body, speech, and mind are essentially one with the enlightened body, speech, and mind of Chenrezi; this you should recognize as the quintessence of the practice.

~ The heart treasure of the enlightened ones / Patrul Rinpoche; with commentary by Dilgo Khyentse.