Answer: MAN (Mayin Nukvin) is raising certain desires; their appeal to the Creator. MAD is receiving a reply to what we ask for from the Creator.
MAN and MAD must match. The more they are aligned together, the more correctly I am turning to the Creator.
MAN is formed when I ask for others. And only for others! Then, I have the desire to fulfill others and I ask the Creator: “Give me the opportunity to fulfill them,” i.e., to receive for the sake of others.
Such a request to the Creator is called MAN, and the Creator’s response so that I can fulfill them in practice is called MAD.
From KabTV’s “Fundamentals of Kabbalah,” 4/1/19