Is saying "no thanks necessary" or "you're welcome" when people are thanked considered a sin, based on the hadith: "He who does not thank people does not thank Allah"?

The hadith: "He who does not thank the people does not thank Allah" is authentic. Its meaning does not contradict the saying "pardon" or "there is no thanks for an obligation," as both are intended to convey humility. It is better for a Muslim to supplicate for someone who has shown kindness to him, as the Prophet, peace and blessings be upon him, guided: "Whoever does you a favor, then reciprocate it. If you do not find anything with which to reciprocate it, then supplicate for him until you see that you have reciprocated him." It is most appropriate for the one who is thanked or supplicated for to say "Ameen" to the thanks-giver's supplication or to say to him: "May Allah reward you with good," as the Messenger of Allah, peace and blessings be upon him, said: "Whoever has a favor done to him and says to the doer: 'May Allah reward you with good,' he has indeed expressed the utmost praise."