Keeping his eye on the six different sorts of forts the king should build his cities containing every kind of riches and every article of use in profusion.
षड्विधं दुर्गमास्थाय पुराण्यथ निवेशयेत्। सर्वसम्पत्प्रधानं यद् बाहुल्यं चापि सम्भवेत्॥