Valmiki Ramayana Ayodhya Kanda Sarga 67 Shloka 19

अराजके without a king, जनपदे in a country, कृषिगोरक्षजीविनः living by farming and protecting cattle, धनवन्तः wealthy people, सुरक्षिताः wellprotected, विवृतद्वाराः with the doors wide open, न शेरते do not sleep.

In a country without a king, wealthy people who live on farming and raising cattle cannot sleep safely in their homes with doors wide open.