Bhashya
ननु कथं प्रसिद्धता अस्यार्थस्येति, उच्यते—जायादिकर्मान्तानां लोकफलसाधनानां पितृत्वं तावत्प्रत्यक्षमेव ;
In plain words
An objection is raised: how can this meaning be considered obvious? The reply is given: the fact that the father is the producer of results—culminating in wives and ritual actions—is directly and plainly visible.
Close to the Sanskrit
Now, how is the well-knownness of this meaning? It is stated: The fatherhood of those whose means to worldly fruits end with wives and actions is indeed direct and perceptible.