Garudapurana 1.235.41

1.235.41

tasyopari guṇaiśvaryamaṣṭapatraṃ saroruham /
jñānaṃ tu karṇikā tatra vijñānaṃ kesarāḥ smṛtāḥ //

above it, an eight-petaled lotus representing virtue and sovereignty;
knowledge is the pericarp there, and discriminative knowledge is regarded as the filaments;