Mekhala and Kanakhala

Mekhala (Mekhalā or Mahakhala – "Elder Mischievous Girl") "The Elder Severed-Headed Sister" and Kanakhala (Kankhala, Kanakhalā – "Younger Mischievous Girl") "The Younger Severed-Headed Sister") are two sisters who figure in the eighty-four mahasiddhas ("great adept") of Vajrayana Buddhism. Both are described as the disciples of another mahasiddha, Kanhapa (Krishnacharya). They are said to have severed their heads and offered them to their guru, and then danced headless. Their legend is closely associated with the Buddhist severed-headed goddess Chinnamunda.

The Legends of the Eighty-four Mahasiddhas (Grub thob brgyad bcu tsa bzh'i lo rgyus, written by the Tibetan monk Mondup Sherab which was narrated to him by Abhayadattashri c. 12th century) narrates the following tale: Mekhala and Kanakhala were daughters of a householder in Devikotta (Bengal), who married them to sons of a boatman. Their husbands taunted them and their neighbours gossiped about them. Finally, Kanakhala could not take the abuse any more and suggested Mekhala that they should flee from their house. However, the wise Mekhala told her younger sister that they deserved it and would have to face the same torment somewhere else if they run away; they stay and bear the agony.

The mahasiddha guru Krishnacharya (Kanhapa) passed by their house with his retinue of 700 dakas and dakinis. The sisters prostrated to the guru and explained their anguish. Krishnacharya instructed them in the sadhana (spiritual practice) of the goddess Vajravarahi, a ferocious form of Vajrayogini. The sisters practised the meditative techniques for 12 years and accomplished their goal.

The sisters journeyed to meet their guru to seek further instruction. They bowed to him and circumambulated him in reverence, however Krishnacharya failed to recognize them. They introduced themselves as the married unhappy sisters, he initiated 12 years ago. He responded that if he was their guru, they should have brought him offerings. The sisters asked him his desired offerings. The guru promptly asked for their heads.

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Wikipedia