The Compendium of Caraka 5.2.4

5.2.4

apyevaṃ tu bhavet puṣpaṃ phalenānanubandhi yat/
phalaṃ cāpi bhavet kiñcidyasya puṣpaṃ na &pūrvajam//

There may indeed be a flower that is not followed by fruit, / and there may also be some fruit whose preceding flower did not exist;