Jñāneśvarī (commentary on the Bhagavadgītā) 4.76

4.76

taisā samastāṃ yāṃ bhajanāṃ |
mī sākṣibhūtu paiṃ arjunā |
etha pratiphaḷe bhāvanā |
āpulālī ||

so, Arjuna, to all these forms of worship, / I am merely the witness; / here, each person's own conception / bears its fruit.