केचित्कल्पसहस्राणि जायमानाः पुनः पुनः ।एकामेवास्थिता योनिं केचिद्योन्यन्तरं श्रिताः
In plain words
Some, being born again and again for thousands of kalpas, remain fixed within one single species alone; some have passed into another species.
केचित्कल्पसहस्राणि जायमानाः पुनः पुनः ।एकामेवास्थिता योनिं केचिद्योन्यन्तरं श्रिताः
Some, being born again and again for thousands of kalpas, remain fixed within one single species alone; some have passed into another species.