Wisdom of today. Blavatsky explains.

Thus do the "Brothers of the Shadow" — the murderers of their Souls, the dread Dad-Dugpa clan (11).Hast thou attuned thy being to Humanity's great pain, O candidate for light?Thou hast? . . . Thou mayest enter. Yet, ere thou settest foot upon the dreary Path of sorrow, 'tis well thou should'st first learn the pitfalls on thy way..   .   .   .   .   .   .   .   .Armed with the key of Charity, of love and tender mercy, thou art secure before the gate of Dâna, the gate that standeth at the entrance of the path.

(11) The Bons or Dugpas, the sect of the "Red Caps," are regarded as the most versed in sorcery. They inhabit Western and little Tibet and Bhutan. They are all Tântrikas. It is quite ridiculous to find Orientalists who have visited the borderlands of Tibet, such as Schlagintweit and others, confusing the rites and disgusting practices of these with the religious beliefs of the Eastern Lamas, the "Yellow Caps," and their Naljors or holy men. The following is an instance.

"Yea; on the Ârya Path thou art no more Srotâpatti, thou art a Bodhisattva (33). The stream is cross'd. 'Tis true thou hast a right to Dharmakâya vesture; but Sambhogakâya is greater than a Nirvânî, and greater still is a Nirmânakâya — the Buddha of Compassion (34).
Now bend thy head and listen well, O Bodhisattva — Compassion speaks and saith: "Can there be bliss when all that lives must suffer? Shalt thou be saved and hear the whole world cry?"
Now thou hast heard that which was said.
Thou shalt attain the seventh step and cross the gate of final knowledge but only to wed woe — if thou would'st be Tathâgata, follow upon thy predecessor's steps, remain unselfish till the endless end.
Thou art enlightened — Choose thy way.
.   .   .   .   .   .   .   .   .
Behold, the mellow light that floods the Eastern sky. In signs of praise both heaven and earth unite. And from the four-fold manifested Powers a chant of love ariseth, both from the flaming Fire and flowing Water, and from sweet-smelling Earth and rushing Wind.
Hark! . . . from the deep unfathomable vortex of that golden light in which the Victor bathes, ALL NATURE'S wordless voice in thousand tones ariseth to proclaim:
Joy unto ye, O men of Myalba (35).
A Pilgram hath returned back "from the other shore."
A new Arhan (36) is born. . . .
Peace to all beings (37).
This same popular reverence calls "Buddhas of Compassion" those Bodhisattvas who, having reached the rank of an Arhat (i.e., having completed the fourth or seventh Path), refuse to pass into the Nirvânic state or "don the Dharmakâya robe and cross to the other shore," as it would then become beyond their power to assist men even so little as Karma permits. They prefer to remain invisibly (in Spirit, so to speak) in the world, and contribute toward man's salvation by influencing them to follow the Good Law, i.e., lead them on the Path of Righteousness. It is part of the exoteric Northern Buddhism to honour all such great characters as Saints, and to offer even prayers to them, as the Greeks and Catholics do to their Saints and Patrons; on the other hand, the esoteric teachings countenance no such thing. There is a great difference between the two teachings. The exoteric layman hardly knows the real meaning of the word Nirmânakâya — hence the confusion and inadequate explanations of the Orientalists. For example Schlagintweit believes that Nirmânakâya-body, means the physical form assumed by the Buddhas when they incarnate on earth — "the least sublime of their earthly encumbrances" (vide "Buddhism in Tibet") — and he proceeds to give an entirely false view on the subject. The real teaching is, however, this: —
The three Buddhic bodies or forms are styled: —
1. Nirmânakâya.2. Sambhogakâya.3. Dharmakâya. 

Source : https://www.theosociety.org/pasadena/voice/voice3.htm#ttt11