Śivasaṃhitā 5.205

The «supportless» jīva (nirālamba) is the fundamental Vedantic discovery: the individual being rests on no external foundation because it is its own foundation. By removing all external support points—body, mind, ego, world—what remains does not fall: pure consciousness reveals itself as self-sufficient. This is the path that leads directly to Śiva.

Nirālamba = without support (nir = without, ālamba = support/prop), jīva = individual living being, vedānta-yukti = Vedantic reasoning (yukti = correct logical argument), Tripurāntaka = destroyer of the three cities (tripura = three cities, antaka = destroyer). The three cities represent the three bodies or three states of consciousness.

The «destroyer of Tripura» as Śiva’s epithet alludes to the mythic episode where three flying demon cities were destroyed with a single arrow. Esoterically, these three cities are jāgrat, svapna and suṣupti (waking, dreaming, deep sleep), and their «destruction» is access to turīya: liberation from the three ordinary states into the fourth and permanent consciousness.