Natyashastra
आद्यो भ्रमरकश्चैव त्रिकं च परिवर्तयेत् । पृष्ठापसर्पी वामश्चेत्यावर्तं मण्डलं भवेत् ॥ ५२॥
The first movement of the bee should also change direction three times. The leftward reversal of movement results in a circular formation.
english translation
Adyo bhramarakazcaiva trikaM ca parivartayet । pRSThApasarpI vAmazcetyAvartaM maNDalaM bhavet ॥ 52॥
hk transliteration by Sanscript