If a person were not himself the instrument of his acts, the sacrifices would not bear any fruits in his case nor would anybody be a disciple or preceptor.
इष्टापूर्तफलं न स्यान्न शिष्यो न गुरुर्भवेत्। पुरुषः कर्मसाध्येषु स्याच्चेदयमकारणम्॥