Brihat Parashara Hora Shastra
कलत्र्स्थानगे भौमे शुक्रे जामित्रगे शनौ । लग्नेशे रन्ध्रराशिस्थे कलत्रत्रयवान् भवेत् ॥ २०॥
If Mangal and Śukr are in Yuvati, or, if Śani is Yuvati, while the Lord of Lagn is in Randhr, the native will have 3 wives.
english translation
kalatrsthAnage bhaume zukre jAmitrage zanau । lagneze randhrarAzisthe kalatratrayavAn bhavet ॥ 20॥
hk transliteration by Sanscript