In the Tawhid book for the secondary school, it says: "(The ruling on the Muslim's dealings with the non-Muslim)." Is there an error in this phrase?

Question:
May Allah reward you, Your Eminence, father. The questioner says: In the Tawhid book for the third year of secondary school, in the lesson on al-wala' wa al-bara' (loyalty and disavowal), the book wrote in parentheses: "The ruling on the Muslim's dealings with the Muslim and the non-Muslim." Should we point out that the phrase "non-Muslim" is an error, and that we should call them disbelievers?

Answer:
His use of the word "dealings" is more severe than "with the non-Muslim." "Dealings" erases the name of al-wala' wa al-bara' (loyalty and disavowal) and puts "dealings" in its place. Dealings are not forbidden; it is permissible to buy and sell with a disbeliever, and it is permissible to rent to a disbeliever. Dealings are not forbidden between Muslims and disbelievers. But what is forbidden is al-wala' wa al-bara' (loyalty and disavowal). So why do they erase al-wala' wa al-bara' and make something that is not a substitute for it? Something that is permissible and lawful? But this is from ignorance or from desire, and may Allah protect us from that. So the phrase must be corrected as it was. Yes.