Śatapatha Brāhmaṇa ("of a hundred paths") 8.6.1.21

8.6.1.21

ete vai te hetayaśca prahetaśca | yāṃstaddevā eṣāṃ lokānāmupariṣṭādgoptṝnakurvatātha yāstāḥ prajā ete te senānīgrāmaṇyo 'tha yattanmithunametāstā apsarasaḥ sarva eva taddevāḥ kṛtsnā bhūtvā saha prajayā saha mithunenaitasminnāke svarge loke 'sīdaṃstathaivaitadyajamānaḥ sarva eva kṛtsno bhūtvā saha prajayā saha mithunenaitasminnāke svarge loke sīdati

He said to them, 'Come ye to me and restore ye to me wherewith ye are going from me!'--'What will accrue unto us therefrom?'--'That (part) of my body shall be sacred unto you!'--'So be it!' So Indra and Agni, and Visvakarman restored that (part) unto him.