अस्तमित आदित्ये याज्ञवल्क्य किं-ज्योतिरेवायं पुरुष इति चन्द्रमा एवास्यज्योतिर्भवतीति चन्द्रमसैवायं ज्योति-षास्ते पल्ययते कर्म कुरुते विपल्येतीत्ये-वमेवैतद्याज्ञवल्क्य ॥ ३ ॥
In plain words
"But once the sun has gone down, Yājñavalkya -- what light does a person live by then?" "The moon becomes his light," he said. "By moonlight he sits, walks about, does his work, and comes home again." "Just so, Yājñavalkya. Just so."
Close to the Sanskrit
"When the sun has set, Yājñavalkya, what light does this person then have?" "The moon indeed is his light," [he said]. "By that very moonlight he sits, goes about, performs work, and returns." "Just so, Yājñavalkya."