या नियुक्ताऽन्यतः पुत्रं देवराद् वाऽप्यवाप्नुयात् । तं कामजमरिक्थीयं वृथोत्पन्नं प्रचक्षते ॥ १४७ ॥
If a woman (duly) appointed bears a son to her brother-in-law or to another (Sapinda), that (son, if he is) begotten through desire, they declare (to be) incapable of inheriting and to be produced in vain.
english translation