Is it permissible to limit one's response to "And upon you, peace" when someone greets with "Peace be upon you, and Allah's mercy and blessings"?

Question:
May Allah reward you. He says: Shaykh, if I know that if I greet so-and-so by saying "Peace be upon you, and Allah's mercy and blessings," he will respond with less than this greeting, should I greet him with the full phrase, or should I limit myself to saying "Peace be upon you"?

Answer:
Complete it, complete it, because whoever completes these three phrases will receive a great reward and thirty good deeds. A man came to the gathering of the Prophet (peace and blessings be upon him) and said, "As-salamu alaykum" (Peace be upon you). The Prophet (peace and blessings be upon him) said, "Wa alaykum as-salam" (And upon you be peace), which is ten. Then the second man came . He said, "As-salamu alaykum wa rahmatullah" (Peace be upon you and the mercy of Allah). The Prophet said, and thirty, meaning thirty good deeds.
And Allah (Exalted and Majestic is He) says: So there is no doubt that the most complete way is to include the mercy in "Peace be upon you and Allah's mercy and blessings." This is the most complete way. So you offer the most complete greeting, whether the Muslim to whom you are speaking offers it or not; you attain the reward for it. Yes.