Vaisesika Sūtras
Vaisesika Sūtra 3.2.15
देवदत्तोगच्छतीत्युपचारादभिमानात्तावच्छरीर प्रत्यक्षोऽहङ्कारः ॥१५॥
The 'ahaṅkāra', i.e. ego, is directly perceived as long as the body is identified through attribution like "Devadatta goes".