Ecclesiastes (Kohelet)
Ecclesiastes 4:3
Kohelet states that better than both the living and the dead is one who has not yet been born, who has not seen the evil deeds done under the sun. This verse is often cited as the Scriptural basis underlying the Shammaite position.
וְטוֹב֙ מִשְּׁנֵיהֶ֔ם אֵ֥ת אֲשֶׁר־עֲדֶ֖ן לֹ֣א הָיָ֑ה אֲשֶׁ֤ר לֹֽא־רָאָה֙ אֶת־הַמַּעֲשֶׂ֣ה הָרָ֔ע אֲשֶׁ֥ר נַעֲשָׂ֖ה תַּ֥חַת הַשָּֽׁמֶשׁ׃
and happier than either are those who have not yet come into being and have never witnessed the miseries that go on under the sun.
Why it matters — This verse from Kohelet is the closest biblical parallel to the Shammaite view that it would have been better for man not to have been created.