Sparsa is loosely defied as touch.
It is more than touch,more than a touch without touching, difficult to translate the Sanskrit word.
The Purusha and Prakriti are two entities evolves only after Sparsa Matra, just the moment after touching.
So along with Purusha and Prakriti, this makes the Trinity of Principles facilitating Evolution.
Three Gunas, Dispositions, Sathva, Raja, and Tamas.
The trinity of Hindu Pantheon, Brahma, Vishnu an Rudra.
The Three Yogas,
Jnana Yoga,
Karma Yoga,
Bhakthi Yoga.
Pranava consists of Three letters.
A
U
M
Three layers of Nature, Light, Fire and Darkness.
States of Being-Immanent, Transcendent and Absolute.
Periods of The Day, Morning, Noon and Evening.
Three Primary worlds Bur, Bhuvah, Suvah.
