Manusmriti

siva.sh/manusmriti/2/75

प्राक्कूलान् पर्युपासीनः पवित्रैश्चैव पावितः । प्राणायामैस्त्रिभिः पूतस्तत ओं।कारमर्हति ॥ ७५ ॥

sanskrit

Seated on (blades of Kusa grass) with their points to the east, purified by Pavitras (blades of Kusa grass), and sanctified by three suppressions of the breath (Pranayama), he is worthy (to pronounce) the syllable Om.

english translation

prAkkUlAn paryupAsInaH pavitraizcaiva pAvitaH | prANAyAmaistribhiH pUtastata oM|kAramarhati || 75 ||

hk transliteration by Sanscript