Brihat Samhita
हन्ति मण्डला पुरं छत्रवत्पुरोहितम् । वंशगुल्मवत्स्थिता राष्ट्रदोषकारिणी ॥ ३३-२७ ॥
If it should appear circular in shape, towns will suffer; if of the shape of an umbrella, priests will suffer; and if of the shape of a clump of bamboos, the kingdom will be imperilled.
english translation
hanti maNDalA puraM chatravatpurohitam । vaMzagulmavatsthitA rASTradoSakAriNI ॥ 33-27 ॥
hk transliteration by Sanscript