Sanat-Sujata said Asceticism unstained by faults (desire, insufficient concentration etc.) alone leads to emancipation; this (asceticism) is successful; other sorts of devotion are unsuccessful.
सनत्सुजात उवाच निष्कल्मषं तपस्त्वेतत् केवलं परिचक्षते। एतत् समृद्धमप्युद्धं तपो भवति केवलम्॥