By Swami Harshananda
Brahmarandhra literally means ‘the crevice of Brahman’.
The crevice in the crown of the head is called ‘brahmarandhra’ since Brahman (īśvara or God) is said to have entered this body through this randhra or crevice. Brahman made it alive by creating it.
If a person manages to leave the body at the time of death, through this randhra, he goes to Brahmaloka or the world of Brahmā. Hence it is named so. This is possible only for great yogis, persons of very high spiritual evolution. Works on Haṭhayoga describe this brahmarandhra as the top end of the suṣumnā canal.
- The Concise Encyclopedia of Hinduism, Swami Harshananda, Ram Krishna Math, Bangalore