सर्वं वेद भवानिति ब्रूयात्कार्यसिद्धिकरं वा ॥ कZ_०१.१६.२८ ॥
sarvaṃ veda bhavān iti brūyāt kāryasiddhikaram vā.
He should say, ‘You know everything,’ or say whatever facilitates accomplishment of the task.
It endorses controlled speech—avoiding harmful disclosure while steering the interaction toward state objectives.