Natyashastra
लाङ्गलेन समुत्कृष्य निर्लोष्टतृणशर्करम् । लाङ्गले शुद्धवर्णो तु धुर्यो योज्यौ प्रयत्नतः ॥ ७०॥
The earth should be lifted with a plow, and the dust-free sand and grass should be used. The plow, with its clean color, should be carefully placed in its proper position.
english translation
lAGgalena samutkRSya nirloSTatRNazarkaram । lAGgale zuddhavarNo tu dhuryo yojyau prayatnataH ॥ 70॥
hk transliteration by Sanscript