We have never heard that these four, viz., he, who injures a friend, he, who is ungrateful, he, who kills a woman, and he, who kills preceptor, succeed in purifying themselves.
मित्रद्रुहः कृतघ्नस्य स्त्रीघ्नस्य गुरुघातिनः। चतुर्णां वयमेतेषां निष्कृतिं नानुशुश्रुम॥