Śrīmad-Bhāgavatam · Text 4.11.21
Who is speaking and story frame
आयुषोऽपचयं जन्तोस्तथैवोपचयं विभु: ।
उभाभ्यां रहित: स्वस्थो दु:स्थस्य विदधात्यसौ ॥ २१ ॥
āyuṣo ’pacayaṁ jantos
tathaivopacayaṁ vibhuḥ
ubhābhyāṁ rahitaḥ sva-stho
duḥsthasya vidadhāty asau
The Supreme Personality of Godhead, Viṣṇu, is all-powerful, and He awards the results of one’s fruitive activities. Thus, although one living entity’s duration of life is very small whereas that of another is very great, He is always in His transcendental position, and there is no question of lessening or increasing His duration of life.
Read Śrīla Prabhupāda's purport on Vedabase.io