The fish is separate from the water in which it lives, and the water is separate from the fish that lives in it. Though the fish and water exist together, yet it is never drenched by water.
अन्य एव तथा मत्स्यस्तदन्यदुदकं स्मृतम्। न चोदकस्य स्पर्शेन मत्स्यो लिप्यति सर्वशः॥