Brihat Parashara Hora Shastra
एकांशकस्थौ मन्दारौ यत्र कुत्रस्थितौ यदा। शशिकेन्द्रगतौ तौ वा द्विमातृभ्यां न जीवति॥ ३३॥
If Mangal and Śani are together in a Kendra with reference to Candr and occupy one and the same Navāńś, the child will have two mothers. Yet it will be short-lived.
english translation
ekAMzakasthau mandArau yatra kutrasthitau yadA। zazikendragatau tau vA dvimAtRbhyAM na jIvati॥ 33॥
hk transliteration by Sanscript