Vaisesika Sūtra 5.1.11

हस्तकर्मणा दारककर्म व्याख्यातम् ॥११॥

hastakarmaṇā dārakakarma vyākhyātam ॥11॥

[हस्त-कर्मणा (hasta-karmaṇā) - by movement of hand; दारक-कर्म (dāraka-karma) - movement on a child; व्याख्यातम् (vyākhyātam) - is explained;]

The movement up on a child is explained through the movement of the hand.