All the sorts of created things have four kinds of birth. They are viviparous, oviparous, vegetables, and those born of filth.
भूतानां जन्म सर्वेषां विविधानां चतुर्विधम्। जरायुजाण्डजोद्भिज्जस्वेदजं चोपलक्षयेत्॥