長阿含經 5.p37

5.p37

The Buddha told Vāsiṣṭha, “Those wrongdoers in the past are like those today. At the time, those sentient beings learned wrong customs, and felt strongly about doing what they wanted without any moderation. They built homes because they were ashamed of it. This was when homes first appeared in the world. They learned wrong customs that increased lust, and then the womb appeared, which was the cause of impure birth. This was when wombs first appeared in the world.