Brihat Parashara Hora Shastra
सूर्यात् स्वन्त्योभयस्थैश्च विना चन्द्रं कुजादिभिः । वेशिवोशिसमाख्यौ च तथोभयचरः क्रमात् ॥ १॥
Vesi, Vosi and Abhayachari Yogas. Barring Candr, if a Grah among Mangal etc. be in the 2nd from Sūrya, Vesi Yog is formed, if in the 12th from Sūrya, Vosi Yog is formed and if in both the 2nd and the 12th from Sūrya, Ubhayachari Yog is caused.
english translation
sUryAt svantyobhayasthaizca vinA candraM kujAdibhiH । vezivozisamAkhyau ca tathobhayacaraH kramAt ॥ 1॥
hk transliteration by Sanscript