Brihat Parashara Hora Shastra
सुतेशेस्तङ्गते वाऽपि पापाक्रान्ते च निर्बले । तदा न जायते पुत्रो जातो वा म्रियते ध्रुवम् ॥ ३॥
The Yuti of Putr‟s Lord with Lagn‟s Lord in a good Bhava will ensure early obtainment of children apart from happiness through them. If they join in an evil Bhava, they will prove a defect in this respect.
english translation
sutezestaGgate vA'pi pApAkrAnte ca nirbale । tadA na jAyate putro jAto vA mriyate dhruvam ॥ 3॥
hk transliteration by Sanscript