Brihat Jataka
रवीन्दुशुक्रावनिजै: स्वभागगैर्गुरौ त्रिकोणोदयसंस्थितेऽपि वा ॥ भवत्यपत्यं हि विबीजिनामिमे करा हिमांशोर्विदृशामिवाफला: ॥ ४-३ ॥
If Sun, Moon, Venus and Mars are located in their own navamsha or if Jupiter is located in the Ist, 5th or the 9th house, pregnancy takes place. These yogas are of course of no avail to impotent people like the rays of Moon, to the blind.
english translation
ravInduzukrAvanijai: svabhAgagairgurau trikoNodayasaMsthite'pi vA ॥ bhavatyapatyaM hi vibIjinAmime karA himAMzorvidRzAmivAphalA: ॥ 4-3 ॥
hk transliteration by Sanscript