। ॥ ७५१ ॥
In plain words
If another word in the sentence has already delivered the meaning on its own, whence any need to reach that same meaning a second time through lakṣaṇā?
Close to the Sanskrit
When the ascertainment of the word's meaning stands established of itself by another word, whence again the need for a cognition of that meaning through lakṣaṇā?