Ramayana
अहं पञ्चसु भूतेषु मनष्षष्ठेषु राघव । विचिन्त्य सीतां शुद्धेति जग्राह वननिर्झरे ॥ 7-96-22 ॥
"By the five elements, with the mind as the sixth, O Raghava, having pondered and found Sita pure, I received her at the forest spring."
english translation