Mahabharata 14.49.20

तथा कर्मसु विज्ञेयं फलं भवति वा न वापुरुषस्यात्मनिःश्रेयः शुभाशुभनिदर्शनम्

tathā karmasu vijñeyaṃ phalaṃ bhavati vā na vāpuruṣasyātmaniḥśreyaḥ śubhāśubhanidarśanam

Our plain-language meaning of this verse is waiting for scholar review.