without being clear —

clarity (that emperumān is both upāyam (means) and upĕyam (goal)) —

full expansion of knowledge, which is a result of ṣudhdha sathva guṇam (pure goodness) —

(even when āthmās are unclear in this principle) he who protects with clarity in this principle —

which bring clarity in those who relate to [by learning, reciting] —

having ascertained —