यद्वविज्ञातमिवाभूदित्येतासामेव देवतानांसमास इति तद्विदांचक्रुर्यथा तु खलु सोम्येमास्तिस्रो देवताः पुरुषं प्राप्य त्रिवृत्त्रिवृदेकैका भवति तन्मे विजानीहीति ॥ ६.४.७ ॥
In plain words
and whatever seemed unknown they knew to be a combination of these very deities. Learn from me, my dear, how each of these three deities, on reaching a person, becomes threefold.