Bhashya
तथा आकाशे हृद्याकाशे हृदये च एका देवता ; पूर्णम्अप्रवर्ति चेति विशेषणद्वयम् ; पूर्णत्वविशेषणफलमिदम्-पूर्यते प्रजया पशुभिः ; अप्रवर्तिविशेषणफलम्- नास्या-स्माल्लोकात्प्रजोद्वर्तत इति, प्रजा संतानाविच्छित्तिः ॥
In plain words
Likewise, in external space, in the space within the heart, and in the heart itself, resides a single divinity, characterized by two attributes: fullness and non-deviation. The fruit of the attribute of fullness is that one is abundantly endowed with descendants and cattle. The fruit of the attribute of non-deviation is that one's lineage is never cut off from this world, progeny signifying the uninterrupted continuity of descendants.
Close to the Sanskrit
Thus in space, in the heart-space, and in the heart, there is one deity; 'full' and 'non-deviating' are the two qualifiers; this is the fruit of the qualifier of fullness: one is filled with progeny and cattle; the fruit of the qualifier of non-deviation: of this person's progeny, from this world does not turn away, progeny being the non-severance of lineage.