Regarding it is cited the following verse sung by Yayati-That mortal who would acquire life and longevity should, after having celebrated sacrifices with devotion, renounce them and practise penances.
अत्राप्युदाहरन्तीमां गाथां गीतां ययातिना॥ यो मर्त्यः प्रतिपद्येत आयुर्जीवितमात्मनः। यज्ञमेकान्ततः कृत्वा तत् संन्यस्य तपश्चरेत्॥