Sage Maṅkaṇaka’s Dance of Wonder
From a sage’s wound flows not blood but the sap of plants — and in his joy, the whole world begins to dance.

Vaishampayana tells this to King Janamejaya, during the account of Balarama’s pilgrimage.
सुकन्यायां वायुना जनितः मङ्कणकः मुनिः ।
तस्य कुशाग्रेण भिन्ने हस्ते ओषधिरसः स्रुतः ॥
Mahābhārata · Shalya Parva 38
Maṅkaṇaka, the sage born of Sukanyā by the wind-god — when his hand was pierced by the sharp tip of kusha grass, plant-sap flowed from it.
The sage Maṅkaṇaka was a son of the wind-god, keeping strict celibacy from childhood. One day, bathing in the river Sarasvatī, he saw an exquisitely beautiful woman bathing unclothed in the water. His mind, for all his years of penance, wavered for a moment, and his seed fell into the Sarasvatī’s waters. There it divided into seven, and seven sages were born — Vāyuvega, Vāyuhan, Vāyumandala and the rest — from whom, in time, another line of forty-nine Maruts (the wind-clan Maruts) arose.
But the story’s true marvel was yet to come. Years later, his austerities perfected, Maṅkaṇaka one day cut his hand on the sharp blade of kusha grass. Instead of blood, green plant-sap flowed from the wound! Seeing this, the sage was so overcome with joy that he began to dance where he stood — for here was proof of his attainment, as though his very body had become one with nature.

But his joy was so powerful that the whole of creation danced with him — moving and unmoving, beast and bird, tree and vine, all of it! A strange trembling spread through the cosmos. Alarmed, the gods, led by Brahma, went to Mahadeva and begged him to stop it.
Mahadeva himself took the form of an old brahmin and, walking with the aid of a staff, came to Maṅkaṇaka and asked — “O sage, why do you dance with such joy?” Proudly Maṅkaṇaka showed his wound — “Look, not blood but plant-sap flows from my body!” Mahadeva smiled — “What is so wondrous in that?” — and pressed his own fingertip with his thumb. From it flowed not blood but white ash! Maṅkaṇaka stood stunned, and understood that this was no ordinary brahmin but Mahadeva himself. His pride dissolved; he praised Shiva and begged forgiveness. Ever since, this place has been held sacred as the Saptasārasvata tīrtha.