Manasara 30.47

30.47

sarveṣāṃ mukhabhadrāṇāṃ pārśve sopānasaṃyutam
pārśvayordvāradeśe tu mukhasopānameva vā

On the side of all front projections, it is provided with a staircase, / or else a front staircase may be at the entrance-site on both sides;