About Dhumavati
The seventh Mahavidya is Dhumavati. Here is the story of Her origin. One day, Mahadev was seated in Kailash with Parvati on His lap. She told Shiva that She was very hungry and requested Him to bring Her some food. Shiva asked Her to wait a while, and went back into meditation. Parvati asked again, 'O Father of the Universe, please give me some food — I cannot wait any longer.' When Shiva asked Her to wait a second time, Parvati grew so hungry that She became aggressive. When it happened a third time, Parvati could bear no more, and ate Shiva to appease Her hunger.
Immediately, smoke began to rise from within Her body. Shiva, who was inside Her, opened His third eye and said to Parvati, 'Without me, there is no Purusha in the universe — only Prakriti, as only You now exist.' For this reason, this is the widow form of the Goddess, known as Dhumavati. 'Dhuma' means smoke, and She is depicted without ornaments and in the apparel of a widow. Dhumavati embodies renunciation, removes all frustration and agitation, and is free from disrepute.
Beeja Mantra
Gayatri