Manusmriti

siva.sh/manusmriti/5/121

क्षौमवत्शङ्खशृङ्गाणामस्थिदन्तमयस्य च । शुद्धिर्विजानता कार्या गोमूत्रेणौदकेन वा ॥ १२१ ॥

sanskrit

A man who knows (the law) must purify conch-shells, horn, bone and ivory, like linen cloth, or with a mixture of cow’s urine and water.

english translation

kSaumavatzaGkhazRGgANAmasthidantamayasya ca | zuddhirvijAnatA kAryA gomUtreNaudakena vA || 121 ||

hk transliteration by Sanscript