gṛhaṁ vanaṁ vopaviśet pravrajed vā dvijottamaḥ
gṛhaṁ vanaṁ vopaviśet pravrajed vā dvijottamaḥ |
āśramād āśramaṁ gacchen nānyathāmat-paraś caret ||
(Śrīmad Bhāgavatam: 11.17.38)
“One [i.e., a brahmacārī who has graduated from guru-kula] should enter household life or the forest. Alternately, one who is foremost among the twice born should roam. One should go from āśrama to āśrama. One who is not devoted to me should not proceed otherwise.”