Manusmriti

siva.sh/manusmriti/11/248

सव्याहृतिप्रणवकाः प्राणायामास्तु षोडश । अपि भ्रूणहनं मासात् पुनन्त्यहरहः कृताः ॥ २४८ ॥

sanskrit

Sixteen suppressions of the breath (Pranayama) accompanied by (the recitation of) the Vyahritis and of the syllable Om, purify, if they are repeated daily, after a month even the murderer of a learned Brahmana.

english translation

savyAhRtipraNavakAH prANAyAmAstu SoDaza | api bhrUNahanaM mAsAt punantyaharahaH kRtAH || 248 ||

hk transliteration by Sanscript