Is it permissible to initiate a greeting to disbelievers by saying (good morning or good evening)?

The questioner : May Allah reward you. Honorable Shaykh, you mentioned that we should not initiate a greeting to disbelievers, but a student, for example, may be compelled to go to the professor in his office. The custom is for the person coming to another to initiate the greeting. Is it permissible to initiate with the customary greeting, such as "good morning," "welcome," or "good evening," or is it prohibited? And in not greeting the professor, for example, it might be considered an insult to him or a lack of respect, and that might affect his evaluation of me. May Allah reward you with good.

The Shaykh : Look.

The questioner : And in not greeting the professor, for example, it might be considered an insult to him or a lack of respect, and that might affect his evaluation of me. May Allah reward you with good.

The Shaykh : Praise be to Allah, Lord of the worlds, and I send prayers and peace upon Muhammad, the best of the prophets, and upon his family and his Companions, and upon those who follow them with excellence until the Day of Judgment. The Prophet (peace and blessings be upon him) said: I set it aside. As we all know, the salam is more specific than a general greeting.
Therefore, the scholars differed on whether it is permissible for a Muslim to initiate a greeting to a Jew or a Christian by saying "welcome," "ahlan," or the like. Some scholars said there is no harm in initiating with "ahlan" or "welcome," because the Prophet (peace and blessings be upon him) said: The salam is more specific than a general greeting, because the salam means supplicating for the addressee's safety from all harms; it is both a greeting and a supplication. Unlike saying "welcome" or "ahlan," which is not a supplication, but rather an indication of a person's joy at seeing this addressee. So, if you enter upon the professor and say "welcome to so-and-so," for example, or "welcome to the father of so-and-so," there is no harm, because it is permissible to use the kunya (patronymic) for a polytheist. Even if using the kunya is considered a form of honor. However, it is established in Sahih al-Bukhari what indicates the permissibility of using the kunya for a disbeliever or polytheist. Yes.
So, if you say "welcome to the father of so-and-so" or "ahlan to the father of so-and-so" or the like, there is no harm with it. As for saying "good morning," this is also not a problem, because the phrase "good morning" is not directed to a specific person; it does not indicate that you want "good morning" to be specific to this addressee, as you might mean by "good morning"… what? For everyone, meaning for everyone. And it is also permissible for a person to intend in his heart "good morning" for himself and for the Muslims, for example, because intentions are known only to Allah the Exalted.
And I think after this, the answer has become clear: it is not a problem if a person enters upon his non-Muslim professor and says "welcome to the father of so-and-so," "ahlan to the father of so-and-so," or "good morning." This is unlike the salam, for the Prophet (peace and blessings be upon him) forbade initiating it with a disbeliever. Yes.