One verse

Srimad Bhagavatam 12.2.11

12.2.11

त्रिंशद्विंशतिवर्षाणि परमायु: कलौ नृणाम् ॥ ११ ॥

triṁśad viṁśati varṣāṇi paramāyuḥ kalau nṛṇām

triṁśat
thirty
viṁśati
plus twenty
varṣāṇi
years
parama-āyuḥ
the maximum duration of life
kalau
in Kali-yuga
nṛṇām
of men

The maximum duration of life for human beings in Kali-yuga will become fifty years.