सताम् of piety, वेषधरम् covered, पापम् a sinner, प्रच्छनम् a disguised person, पावकम् इव like fire, धर्मच्छद्माभिसंवृतम् with righteousness as a pretext, त्वाम् to you, अहम् I, न अभिजानामि did not recognise

'You are a sinful man covered with the mask of piety thus resembling a hidden fire. I failed to recognise that righteousness is a mere pretext for you.