A weak-minded man who doubts religion, virtue and the words of the Rishis, is precluded form the regions of immortality and bliss as the Shudras are from the Vedas.
धर्मो यस्याभिशक्यः स्यादाष वा दुर्बलात्मनः। वेदाच्छूद्र इवापेयात् स लोकादजरामरात्॥