केचद्वदन्ति तां ज्येष्ठां मध्यमां चापरे शिवाम् ।
सर्वानन्तरजां केचित्कल्पभेदात्त्रयं च सत् ।।
Some say that Shivă (Sati) was eldest of them all, some say she was middle one and some wise trear her as youngest of all. All three opinions are correct, because of difference of Kalpa.