Manusmriti
ब्राह्मणादुग्रकन्यायामावृतो नाम जायते । आभीरोऽम्बष्ठकन्यायामायोगव्यां तु धिग्वणः ॥ १५ ॥
A Brahmana begets on the daughter of an Ugra an Avrita, on the daughter of an Ambashtha an Abhira, but on a female of the Ayogava (caste) a Dhigvana.
english translation
brAhmaNAdugrakanyAyAmAvRto nAma jAyate । AbhIro'mbaSThakanyAyAmAyogavyAM tu dhigvaNaH ॥ 15 ॥
hk transliteration by Sanscript