Hora Sara
द्व्यङ्गस्थिते बुधे लग्ने दृष्टे वा दशमेऽपि वा। यमलं कुरुते योगं पुंस्त्रियो राशिसंश्रयात्॥११॥
When Mercury is in the Lagna identical with a dual sign or when such a Lagna is aspected by Mercury, or when Mercury is in the 10th house, twins will be born, the sex of the twins being decided by the Rasis and Amsas occupied by the above.
english translation
dvyaGgasthite budhe lagne dRSTe vA dazame'pi vA। yamalaM kurute yogaM puMstriyo rAzisaMzrayAt॥11॥
hk transliteration by Sanscript