Bhagavad-gītā As It Is · Text 18.16
The factors of action and the true doer
तत्रैवं सति कर्तारमात्मानं केवलं तु य: ।
पश्यत्यकृतबुद्धित्वान्न स पश्यति दुर्मति: ॥ १६ ॥
tatraivaṁ sati kartāram
ātmānaṁ kevalaṁ tu yaḥ
paśyaty akṛta-buddhitvān
na sa paśyati durmatiḥ
Therefore one who thinks himself the only doer, not considering the five factors, is certainly not very intelligent and cannot see things as they are.
Read Śrīla Prabhupāda's purport on Vedabase.io