Shatapatha Brahmana 10.5.5.8

10.5.5.8

atha ha koṣā dhāvayantaḥ nirūḍhaśirasamagnimupādhāvayāṃ cakrusteṣāṃ haika uvāca śrīrvai śiraḥ śriyamasya nirauhītsarvajyāniṃ jyāsyata iti sa ha tathaivāsa

Now, the Koshas, whilst driving about, once drove up to an Agni with his head pulled out. One of them said, 'The head (siras) means excellence (srî): he has pulled out his excellence, he will be deprived of his all!' and so indeed it happened to him.