“Sakshathar” is almost certainly a spelling/pronunciation of the Sanskrit word “Sākṣātkār” (often said as “sakshatkar”).

In Jain Dharma, sākṣātkār means:

• Direct inner experience / realization
• Especially, direct realization of the soul (ātmā) as separate from body, mind, and worldly things.
• Not only knowing by reading or hearing, but seeing/experiencing it within yourself.

Breakup of the word:

• sākṣāt = directly, in front of one’s inner eyes
• kāra = making / happening

So sākṣātkār = “that which becomes directly seen/realized.”

In Jain usage:

• When a person has samyak-darshan (right faith) in a very living, powerful way, people may say he/she got ātmā‑sākṣātkār – a direct, living realization of the true Self.
• Both Digambar and Shvetambar traditions accept this basic meaning; difference is only in detailed descriptions, not in the core idea.

So, “sakshathar” = sākṣātkār = direct realization (especially of the soul).