One verse

Srimad Bhagavatam 9.20.36

9.20.36

अन्तर्वत्‍न्यां भ्रातृपत्‍न्यां मैथुनाय बृहस्पति: । प्रवृत्तो वारितो गर्भं शप्‍त्वा वीर्यमुपासृजत् ॥ ३६ ॥

antarvatnyam bhratr-patnyam maithunaya brhaspatih pravrtto varito garbham saptva viryam upasrjat

antah-vatnyam
pregnant
bhratr-patnyam
with the brother’s wife
maithunaya
desiring sexual enjoyment
brhaspatih
the demigod named Brhaspati
pravrttah
so inclined
varitah
when forbidden to do so
garbham
the son within the abdomen
saptva
by cursing
viryam
semen
upasrjat
discharged.

When the demigod named Brhaspati was attracted by his brother’s wife, Mamata, who at that time was pregnant, he desired to have sexual relations with her. The son within her womb forbid this, but Brhaspati cursed him and forcibly discharged semen into the womb of Mamata.