O great saintly person, you have compiled the astrological knowledge by which one can understand past and present unseen things. By the strength of this knowledge, any human being can understand what he has done in his past life and how it affects his present life. This is known to you.
Srimad Bhagavata Purana
श्रीमद्भागवतमहापुराणम्
मूल श्लोकः
ज्योतिषामयनं साक्षाद्यत्तज्ज्ञानमतीन्द्रियम् । प्रणीतं भवता येन पुमान् वेद परावरम्
jyotiṣāmayanaṃ sākṣādyattajjñānamatīndriyam | praṇītaṃ bhavatā yena pumān veda parāvaram
SB 10.8.5