Dhammapada Verse 25.8

Sanskrit Verse

सर्वशो नामरूपे यस्य नाऽस्ति ममायितम् । असति च न शोचति स वै भिक्षुरित्युच्यते ॥८ ॥

Bhikkhu Ānandajoti's translation

He who has no attachment whatsoever for the mind and Body [name and form], who does not grieve for what he has not—he is truly called a monk.