The Mukhya Upaniṣads

Taittirīya · Vallī 1 · Anuvāka 3 · Taittirīya 1.3

Passage 3

अन्तेवास्युत्तररूपम् ।विद्या सन्धिः ।प्रवचनँसन्धानम् ।इत्यधिविद्यम् ।अथाधिप्रजम् ।माता पूर्वरूपम् ।पितोत्तररूपम् ।प्रजा सन्धिः ।प्रजननँसन्धानम् ।इत्यधिप्रजलम् ॥ ३ ॥

In plain words

the pupil the latter form, knowledge the junction, instruction the joiner. So much with respect to knowledge. Now with respect to offspring. The mother is the prior form, the father the latter form, the child the junction, begetting the joiner. So much with respect to offspring.