Yōga Sūtra 3.33

मूर्धज्योतिषि सिद्धदर्शनम्।

mūrdhajyōtiṣi siddhadarśanam।

[मूर्ध ज्योतिषि सिद्ध दर्शनम्।
mūrdha = in the head; jyōtiṣi = on the light; siddha = achievers; darśanam = direct vision;]

(By samyama) on the light in the head, one gets the direct vision of achievers.