I know those monkeys that I have first despatched, to be gifted with great velocity*, yet, for urging speed upon them, do you send other foremost of monkeys. *The commentator slips the sense here. According to him, the meaning is, Those monkeys whom I have first sent, are known to me.
प्रेषिताः प्रथमं ये च मयाऽऽज्ञाता महाजवाः। त्वरणार्थं तु भूयस्त्वं सम्प्रेषय हरीश्वरान्॥