I’d heard that disciples who ANTICIPATE a guru’s instructions and who act on them, even before they’re given, are first class. The following is as near as I’ve got to Srila Prabhupada saying anything like this: “A son who acts by anticipating what his father wants him to do is first class, one who acts upon receiving his father’s order is second class, and one who executes his father’s order irreverently is third class. But a son who refuses his father’s order is like his father’s stool.” (Srimad Bhagavatam 9.18.44, translation)