क्षीरनीरविवेकज्ञो हंस एव न चेतरः ।आत्मानात्मविवेकज्ञो यतिरेव न चेतरः ॥ ७७ ॥
In plain words
Milk poured into water — the swan alone knows how to take them apart, and no other bird. Self tangled with not-self — the yati alone knows how to take them apart, and no one else.
Close to the Sanskrit
The knower of the discrimination of milk and water is the swan alone, and not another. The knower of the discrimination of Self and non-Self is the yati alone, and not another.