Today’s Beautiful Hadith is about Greetings

Imran bin Husain RA reported: A man came to the Prophet PBUH and said: “As-Salamu `Alaikum (may you be safe from evil). Messenger of Allah PBUH responded to his greeting and the man sat down. The Prophet PBUH said, “Ten (meaning the man had earned the merit of ten good acts).” Another one came and said: “As-Salamu `Alaikum wa Rahmatullah (may you be safe from evil, and Mercy of Allah be upon you).” Messenger of Allah PBUH responded to his greeting and the man sat down. Messenger of Allah PBUH said, “Twenty.” A third one came and said: “As-Salamu `Alaikum wa Rahmatullahi wa Barakatuhu (may you be safe from evil, and the Mercy of Allah and His Blessings be upon you).” Messenger of Allah PBUH responded to his greeting and the man sat down. Messenger of Allah PBUH said, “Thirty.”
(Abu Dawud and Tirmidhi)