Vaisesika Sūtra 3.2.15

देवदत्तोगच्छतीत्युपचारादभिमानात्तावच्छरीर प्रत्यक्षोऽहङ्कारः ॥१५॥

devadatto gacchati iti upacārāt abhimānāt tāvat-śarīra pratyakṣaḥ ahaṅkāraḥ ॥15॥

[देवदत्तः (devadattaḥ) - Devadatta; गच्छति (gacchati) - goes; इति (iti) - thus; उपचारात् (upacārāt) - by attribution; अभिमानात् (abhimānāt) - from identification; तावत् (tāvat) - as long as; शरीर (śarīra) - the body; प्रत्यक्षः (pratyakṣaḥ) - directly perceived; अहङ्कारः (ahaṅkāraḥ) - ego;]

The 'ahaṅkāra', i.e. ego, is directly perceived as long as the body is identified through attribution like "Devadatta goes".