The Human Vehicle and Heavenly Vehicle do not require leaving home. The Pacceka Buddhas (self-enlightened ones), living in the absence of the Buddha Dhamma, led lives of hermits in the mountains and forests, but went through no ceremony of renunciation. As for Budhisattas, some lived at home, and some did not. In their case, it is not necessary to leave home. Whether or not they leave home depends upon the conditions (hetu-paccaya) of their maintaining the Buddha Dhamma and benefiting all living beings. For example, at the time of Sākyamuni Buddha, both Bodhisattas Ma?ju?rī and Maitreya (P. Metteyya) were Bhikkhus, whereas Vimalakīrti, though a great Bodhisatta, was a layman (a scholar studying Buddhism at home). So it is only in sāvakayāna those who seek to achieve Nibbāna by becoming Arahats need to leave home and lead a homeless life.
人乘、天乘不要求出家;獨覺生在沒有佛法之世,雖是山林隱逸而沒有出家的儀式;菩薩包括出家的和在家的人,不一定要出家,看住持佛法的因緣和利益眾生的因緣可以出家,可以在家。如佛陀時代,文殊師利菩薩和彌勒菩薩都是出家的比丘,維摩詰也是大菩薩,則是居士(在家學(xué)佛之士)。只是聲聞乘中為了證得現(xiàn)法涅槃,成阿羅漢的目的,要求修行者出家。