Purnamadah Mantra

Full Form:

Om, pūrṇamadah pūrṇamidaṃ pūrṇatpūrṇamudacyate ||
pūrṇasya pūrṇamādāya pūrṇamēvāvaśiṣyate ||
Om Santih Santih Santih ||

Usage:

Home, heart, peace

Meaning:

"Om, That (Brahman) is infinite, and this (universe) is infinite.
The infinite proceeds (evolves) from the infinite.
(Then) taking the infinitude of the infinite (universe),
It remains as the infinite (Brahman) alone. Om ! Peace ! Peace ! Peace !"

We are created by, evolve from and merge into ~ the infinite

One of the main shanti-pathah (peace) chants. It's chanted to cultivate and promote peace within oneself and in one's surroundings. This mantra helps us to come home to the heart and be at peace.