The pasuk states that as a reward for honoring parents, one will live a long life (ימיך יאריכון למען). The Gemara (Kiddushin 39:) says that this refers to Olam HaBa and that he will live long in Olam HaBa. Nevertheless, he will surely benefit from many rewards in this world, as well, because honoring parents is from the mitzvos that בעולם פירותיהן אוכל אדם הבא לעולם לו הקיימת והקרן הזה, whose primary reward is in Olam HaBa, but the fruits of the mitzvah are already enjoyed in this world (Mishna, beginning of Pei'ah).
Story of Reb Yehoshua ben Elam and Nanas the Butcher
5. The Seder HaDoros (10) says that heaven revealed to Reb Yehoshua ben Elam in a dream, "Be happy, rejoice, because you will be in Gan Eden together with the butcher Nanas (הקצב ננס). Your portion and his portion are the same." Reb Yehoshua ben Elam said, "Woe that this will be my portion! I feared Hashem since my youth. My only occupation is toil in Torah. I never walked four amos without wearing tzitzis and tefillin. I have eighty students. And after all of the above, all my good deeds and all my Torah equals up to the butcher Nanas?"
Reb Yehoshua ben Elam immediately traveled with his students. He wanted to find out who this Nanas was, and what are his deeds. They had to ask many people for directions and information until they finally arrived at the town where Nanas the butcher lived. Reb Yehoshua asked the people of the town to direct him to Nanas's home, but the people of the town said, "It isn't proper for a talmid chacham and respected person like yourself to go to Nanas." Reb Yehoshua said, "Tell him that I want to meet with him." The townspeople repeated this to Nanas. He responded, "Who am I that Reb Yehoshua should ask about me?" They replied, "This is the reality. He wants to speak with you. You should go to him immediately." Nanas replied, "You are just making fun of me. I won't go." The townspeople told Reb Yehoshua what happened. Reb Yehoshua told them, "So I will go to him because I won't leave this town before I meet Nanas." When Reb Yehoshua arrived at Nanas's home, Nanas fell before Reb Yehoshua's feet and said, "What is your wish, my master?"
