m is that of the master of the light.

76 Homage to thee, Ra! Supreme power, O Ra of the sphere, O Ra who
speakest to the spheres, O Ra who art in thy sphere, homage to
thee, Ra Keschi, four times. They sing praises to the spirit
Keschi,(623) the spheres honor his spirit, they glorify thy body
which is in thee, saying, Homage to thee, great Keschi! four
times. They sing praises in thy honor, spirit Keschi in thy
seventy-five forms which are in thy seventy-five spheres. The
royal Osiris knows them by their names, he knows what is in their
bodies, all their hidden essences. The royal Osiris speaks to them
in their forms, they open to the royal Osiris, they display the
hidden doors to his spirit which is like thy spirit, thou createst
them, thou createst the royal Osiris; the development of his body
is like thine because the royal Osiris is one of thy companions,
who are in their spheres, and who speak in their caverns, those
who are blessed through thy creation and who transform themselves
when thou commandest it. The royal Osiris is like one of those who
speak in their hidden spheres. Ha! he has arrived, he advances in
the train of the spirit of Ra. Ha! he has completed the journey
from Chepri.(624) Hail! he has arrived. The royal Osiris knows all
that concerns the hidden beings. Hail! he has arrived in the midst
of you; homage to his spirit Keschi! four times.

77 O Ra of the Ament, who hast created the earth, who lightest the
gods of the empyrean, Ra who art in thy disk, guide him on the
road to the Ament, that he may reach the hidden spirits; guide him
on the road which belongs to him, guide him on the Western road;
that he may traverse the sphere of Ament, guide him on the road to
the Ament, that the King may worship those who are in the hidden
dwelling, guide him on the road to the Ament, make him descend to
the sphere of Nun. Hail, Ra! the royal Osiris is Nun. Hail Ra! the
royal Osiris is thyself and reciprocally. Hail, Ra! thy spirit is
that of Osiris, thy course is his in the empyrean. Hail, Ra! he
dwells in the empyrean, he traverses the good Ament. Such as thou
art, such is the royal Osiris. Thy intellect, Ra, is his. Osiris
worships the hidden gods, he praises their spirits, these latter
say to one another that thy course (Ra!) is that of Osiris, that
thy way is his,