आर्कं पयो हुडुविषाणमषीसमेतं पारावतऽखुशकृता च युतः प्रलेपः । टङ्कस्य तैलमथितस्य ततो अस्य पानं पश्चात्शितस्य न शिलासु भवेद्विघातः ॥ ५४-११६ ॥
From a mixture of the juice of the plant Calotropis gigantea, the black powder of the burnt horn of the ram, the excrement of the turtle dove and of the rat, rub this over the stone cutter’s chistle, stir it in oil and then temper the instrument. It will neither break nor become blunt when worked in stone.
Or, mix together the juice of the plantain or butter milk. Allow the mixture to remain so for a day and then temper in it any cutting instrument which shall afterwards be rubbed against the whetstone. The instrument will never break when worked in stone or metals.
There will be an abundant supply of water under the bank at the foot of a mountain, if the bank runs from east to west and not if it runs from north to south. Where there may be streams running along the bank, the bank breaks generally when the waves strike against it. In the absence of such streams water shall be collected by the side of the bank by means of dykes constructed of stones or wood. The water shall then be stirred up by horses, elephants and other animals, the waves dashing against the bank will break it.
Along the margin of a pond or other piece of water shall be grown the Kakubha, the Banyan, the Mango, the Plakṣa, the Kadamba, the Nicula, the Jambū, the Vetasā, the Nīpa, the Kurabaka, the Tāla, the Aśoka, the Madhūka and the Bakula.
In the case of tanks, an outlet for water shall be erected of stones in one spot. It should be capable of being closed by means of thick beam shutters or plants thrust between stones, and when closed the other side shall be covered with earth to prevent the escape of water.