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SB 6.4.10

yūyaṁ ca pitrānvādiṣṭā
 deva-devena cānaghāḥ
prajā-sargāya hi kathaṁ
 vṛkṣān nirdagdhum arhatha
Synonyms: 
yūyam — you; ca — also; pitrā — by your father; anvādiṣṭāḥ — ordered; deva-devena — by the Personality of Godhead, the master of the masters; ca — also; anaghāḥ — O sinless ones; prajā-sargāya — for generating the population; hi — indeed; katham — how; vṛkṣān — the trees; nirdagdhum — to burn to ashes; arhatha — are able.
Translation: 
O pure-hearted ones, your father, Prācīnabarhi, and the Supreme Personality of Godhead have ordered you to generate population. Therefore how can you burn to ashes these trees and herbs, which are needed for the maintenance of your subjects and descendants?