Jatakaparijata 14.2

14.2

atha nisargāyuṣo varṣasaṅkhyah |
naravāḥ yayī dvu dhṛtiyca dhṛtiyca kṛtiḥ khabāṇā rāvipūrvakāṇām |
imā niruktāḥ kramayo grahāṇāṃ naisargike hvāyuṣi varṣasaṃkhyāḥ ||

Now, the number of years for natural longevity: / Nineteen, twenty-five, fifteen, twenty-one, twenty-one, thirty-six, and fifty / are declared in order for the planets beginning with the Sun as the number of years in the natural determination of longevity.