Brihatparasharahorashastra 78.15

78.15

ataḥ prasūtikālasya sadṛśo jātake guṇaḥ
jāyate taṃ parīkṣyaiva phalaṃ vācyaṃ vicakṣaṇaiḥ

Therefore, a quality similar to the time of birth is produced / in the native; having examined this alone, the effect should be declared by the discerning.