Chapter 18 · Liberation through Renunciation · Krishna said
Bhagavad Gita 18.15 — Behind every deed
शरीरवाङ्मनोभिर्यत्कर्म प्रारभते नरः। न्याय्यं वा विपरीतं वा पञ्चैते तस्य हेतवः ॥
śarīravāṅmanobhiryatkarma prārabhate naraḥ | nyāyyaṃ vā viparītaṃ vā pañcaite tasya hetavaḥ ||
Meaning
Whatever action a person does with body, speech or mind, right or wrong, these five are its causes.