Charak Samhita
वर्षशतं खल्वायुषः प्रमाणमस्मिन् काले ॥२९॥
[Lifespan of human beings] In the Kali Age, the normal span of life (of human beings) is one hundred years. The factors responsible for the maintenance (of the normal span) of life are:
english translation
varSazataM khalvAyuSaH pramANamasmin kAle ॥29॥
hk transliteration by Sanscript