About bhadra kali ring
The demon Mahiṣāsura saw her in desire and was stricken with mortal panic. He worshiped her and acquired the boon to get killed right by her. She also granted an extra boon that he also could be worshiped in long run in conjunction with her.तिथे पूर्वार्धजा रात्रौ दिन भद्रा परार