The word "Rabbi" meaning "my master" and the argument based on the story of Yusuf

Question:
He says: Honorable Shaykh, may Allah grant you success, is it not permissible to say "Rabbi" meaning "my master," because Yusuf (peace be upon him) said to one of the two young men who consulted him about their dreams, "You will serve your master with wine"?

Answer:
No, not after the prayer. This means regarding the king. This is permissible; it is not forbidden. However, it is disliked (makruh) in the sense of being discouraged, so this phrase is not used. This is also from the law of those before us. As long as our Messenger (peace and blessings be upon him) has forbidden us from this, we do not say it, acting in accordance with the words of our Prophet (peace and blessings be upon him).
Yes. So, whatever came from the previous nations and the Messenger (peace and blessings be upon him) forbade us from, we leave it. The principle in the principles of jurisprudence is that the law of those before us is law for us, unless our law comes with a contrary ruling. This is the principle. Yes.