yaḥ śāstrādiṣv anipuṇaḥ śraddhāvān sa tu madhyamaḥ
Word for word:
yaḥ — anyone who; śāstra-ādiṣu — in the revealed scriptures; anipuṇaḥ — not very expert; śraddhāvān — full of faith; saḥ — he; tu — certainly; madhyamaḥ — second-class or middle-class devotee.
Translation:
“ ‘He who does not know scriptural argument very well but who has firm faith is called an intermediate or second-class devotee.’
Purport:
This verse appears in the Bhakti-rasāmṛta-sindhu (1.2.18).