Vedavyasasmriti 13

13

ete'ntyajāḥ samākhyātā ye cānye ca gavāśanāḥ .
eṣāṃ sambhāṣaṇāt snānaṃ darśanādarkavīkṣaṇam .. 1.12 ..

these are declared to be outcastes, as well as any others who eat beef. / From talking with them [comes] ritual ablution; from seeing them, looking at the sun. // 1.12