Purna Mantra
Om Purnamadah Purnamidam;
Purnat Purnamudachyate
Purnasya Purnamadaya;
Purnamevavashisyate

Translated as:
Brahman is complete – the universe is complete
from the complete Brahman the complete universe has emerged
yet Brahman remains complete.   Isopanishad
or
This is whole; That is whole;
Taking away whole From whole,
Whole still remains whole.  Yajurveda