Shiva Puran 7 37-42.mp4-175
Kala Samhara Murthi, is a form of Lord Shiva. Since Lord Shiva had killed Yama, he is known as Kala Samhara Murthi. Lord Yama is the death god, and once when the life of Markandeya had ended, he sent his divine attendants to take away his life. But they could not do that, since the great Markandeya was performing puja to the Shiva Lingam, and also embracing it.
Then Lord Yama himself visited the place, and when he tried to put his deadly weapon pasha on the neck of Markandeya, accidently, it fell on the Shivalingam, and as a result, Lord Shiva had emerged from the Lingam, and with great anger, he destroyed Lord Yama with his third eye spark, and he also made Markandeya to live permanently in this world. Then after the requests of the demi gods, Lord Shiva restored the life of Lord Yama, and asked him to continue with his work.
Once, Lord Brahma has also got five heads similar to Lord Shiva. Due to that he has become pride, and considered himself as the supreme deity. In order to control his pride, Lord Shiva took the form of Kala Bhairava and removed one of Brahma’s heads. Due to the action of Kala Bhairava, Lord Brahma’s ego was controlled and he surrendered at the feet of Kala Bhairava.
Lord Indra, the god of Devas, had once killed Demon Vritasura, out of his powerful weapon Vajrayudha, and hence, thereafter, he was called as Vritasura Samhara Moorthy.
Once there lived a demon whose name was Vrita, and he contains great powers, and through his powers, he began to harass the Devas, and also challenged Indra to fight with him. As per the advice given by Lord Vishnu, Indra approached the great sage Dadichi, and asked him to donate his backbones in order to make the powerful weapon Vajrayudha, for destroying the demon Vritasura. Sage Dadichi had wilfully agreed to donate his backbones, and he began to perform meditation in order to separate his soul from the body, and after he was dead, Indra collected the backbones of Sage Dadichi, and gave it to Lord Viswakarma, who was the divine architect, and asked him to make a powerful weapon from those bones. Viswakarma has exhibited his entire skills and created a shining and powerful weapon Vajrayudha out of the backbones of Sage Dadichi. With his new weapon, Lord Indra easily defeated Vritasura and also killed him.