In the middle of the eyebrows, at the root of the nasal passage, is the abode of Nectar; if one abides there - the One Who resides there - it is He that is Eternal; He is Omnipresent; thus Supreme.
Seeing the Form of the Formless via the eye - Kutastha Bindu etc. - hearing the Sound of the Soundless via the ear - the Omkar Resounding - when the tongue goes up one tastes the Liquid which is not-Liquid - meaning, one experiences the vayu-form of nectar (sweet)* in the throat; one spontaneously experiences the Scent of the Scentless - of many things and [also] flowers via the nose - the skin experiences the Touch of the Untouchable Brahman via vayu.
Brahmins, kshatriyas and vaishyas should sit, having Stilled vayu after Kriya; staying connected with Brahman at all times and being in intoxication, there will be nothing left of seeing good and bad. Being deeply contented in this way and drinking the flow of immortal nectar, one will later touch
Always practice Kriya. When - upon the continuous performance of Kriya - the Nectar-ambrosia rains from the Brahmarandhra, do not let the mind stir at that time. At that time, while abiding in Brahman, one will not see one’s own form - meaning: no desire will remain. This is the state of dharana.