Śrīmad-Bhāgavatam · Text 11.18.1
Who is speaking and story frame
श्रीभगवानुवाच
वनं विविक्षु: पुत्रेषु भार्यां न्यस्य सहैव वा ।
वन एव वसेच्छान्तस्तृतीयं भागमायुष: ॥ १ ॥
śrī-bhagavān uvāca
vanaṁ vivikṣuḥ putreṣu
bhāryāṁ nyasya sahaiva vā
vana eva vasec chāntas
tṛtīyaṁ bhāgam āyuṣaḥ
The Supreme Personality of Godhead said: One who desires to adopt the third order of life, vānaprastha, should enter the forest with a peaceful mind, leaving his wife with his mature sons, or else taking her along with him.
Read the purport on Vedabase.ioFrom Canto 10, chapter 14 onward, the translation and purports were completed by Śrīla Prabhupāda's disciples after his departure, and published by the Bhaktivedanta Book Trust.