Jaiminīya Upaniṣad Brāhmaṇa 2.3.12

2.3.12

sa yathāśmānam ṛtvā loṣṭo vidhvaṁsetaivam evāsurā vyadhvaṁsanta
sa eṣo 'śmākhaṇo yat prāṇaḥ /

Just as a clod of earth having struck a stone would shatter, so indeed the asuras shattered;
that breath is this solid stone.