Śvetadvīpa-varṇana and Śāstra-pravartana (Śānti Parva 322)
अचोटद्यमानानि यथा पुष्पाणि च फलानि च । स्वं काल॑ नातिवर्तन्ते तथा कर्म पुरा कृतम्
acoṭadyamānāni yathā puṣpāṇi ca phalāni ca | svaṃ kālaṃ nātivartante tathā karma purā kṛtam ||
Bhishma said: “Just as flowers and fruits appear on a tree in their own season without being forced or prodded, so too actions done in the past do not overstep their appointed time for yielding results. The fruition of karma arrives inevitably when its proper moment comes.”
भीष्म उवाच
Karma ripens according to its own proper time: past actions inevitably yield results when the conditions and season are ready, just as a tree naturally produces flowers and fruits in due season without external coercion.
In the instruction-heavy Shanti Parva, Bhishma is teaching about dharma and the workings of moral causality. Here he uses a natural analogy—seasonal flowering and fruiting—to explain that the fruition of previously performed actions cannot be hastened or avoided beyond its destined time.