Ajna (Sanskrit: आज्ञा, ājňā, [aːɟɲʌ], meaning ‘command’ or ‘summoning’) is the sixth primary chakra according to Hindu tradition.
The Ajna chakra is positioned in the brain, directly behind the eyebrow center, while its ksehtram or superficial activation site is at the eyebrow region, in the position of the ‘third eye.
Ajna is white in colour, with two white petals. Inside of the pericarp is the Shakti Hakini, who is moon white, with six faces, and six arms, holding a book, a skull, a drum, a rosary, and making the gestures of granting boons and dispelling fears. Above her is a downward pointing triangle, within which is a moon-white lingum. In some systems the deity Ardhanarishvara, a hermaphrodite form of Shiva-Shakti, symbolizing the primordial duality of subject and object, resides within the lingum. Above the triangle is another smaller triangle, within which is the bija mantra Aum.
Hear the sound here: Aum