Manusmriti
सद्यः पतति मांसेन लाक्षया लवणेन च । त्र्यहेण शूद्रो भवति ब्राह्मणः क्षीरविक्रयात् ॥ ९२ ॥
By (selling) flesh, salt, and lac a Brahmana at once becomes an outcast; by selling milk he becomes (equal to) a Sudra in three days.
english translation
sadyaH patati mAMsena lAkSayA lavaNena ca । tryaheNa zUdro bhavati brAhmaNaH kSIravikrayAt ॥ 92 ॥
hk transliteration by Sanscript