One who is situated in household life and who systematically conquers his mind and five sense organs is like a king in his fortress who conquers his powerful enemies. After one has been trained in household life and his lusty desires have decreased, he can move anywhere without danger.
Srimad Bhagavata Purana
श्रीमद्भागवतमहापुराणम्
मूल श्लोकः
यः षट्सपत्नान् विजिगीषमाणो गृहेषु निर्विश्य यतेत पूर्वम् । अत्येति दुर्गाश्रित ऊर्जितारीन् क्षीणेषु कामं विचरेद्विपश्चित्
yaḥ ṣaṭsapatnān vijigīṣamāṇo gṛheṣu nirviśya yateta pūrvam | atyeti durgāśrita ūrjitārīn kṣīṇeṣu kāmaṃ vicaredvipaścit
SB 5.1.18