Mantra 22

किंदेवतोऽस्यां प्रतीच्यां दिश्यसीति ।वरुणदेवत इति ।स वरुणः कस्मिन् प्रतिष्ठित इति ।अप्स्विति ।कस्मिन्न्वापः प्रतिष्ठिता इति ।रेतसीति ।कस्मिन्नु रेतः प्रतिष्ठितमिति ।हृदय इति ।तस्मादपि प्रतिरूपं जातमाहुर्हृदयादिव सृप्तो हृदयादिव निर्मित इति ।हृदये ह्येव रेतः प्रतिष्ठितं भवतीति ।एवमेवैतद्याज्ञवल्क्य ॥बृह. ३,९.२२ ॥

In plain words

"Which deity hast thou in this western quarter?" "Varuṇa as deity." "And in what is Varuṇa founded?" "In the waters." "And in what are the waters founded?" "In the seed." "And in what is the seed founded?" "In the heart. Therefore men say of a child that is like its father that it has as it were slipped from his heart, as it were been made out of his heart; for in the heart alone is the seed founded." "So it is, Yājñavalkya."