Question: why lord shiva kills parvati?
Answer: Śhiva Purāṇa. In the Śiva Purāṇa, when Shiva was meditating on Mount Mandara, Parvati was in a playful mood and covered Shiva's eyes. This caused the whole universe to become covered in darkness. ... Brahmā granted Andhaka these wishes, but warned him that he could still be killed by Shiva.