This episode confirms that Al’s body was not destroyed but is being "stored" at the Gate, sustained by the toll Edward paid.
Ed, Ling, and Envy successfully exit Gluttony, reappearing in the underground lair of "Father." Fullmetal Alchemist: Brotherhood (Dub) Episode 26
"Alphonse! Someday I’m coming back for you! Just you wait! Wait for me!" Plot Significance This episode confirms that Al’s body was not
Inside the gateway, Ed encounters his own Portal and, right next to it, another Portal belonging to Alphonse. There, he sees Al's original, emaciated body sitting in front of the gate. Though he cannot take Al with him yet—because Al’s soul is still tied to the armor and his body refuses to leave without its soul—the encounter proves that Al’s body is still alive and waiting. and Envy successfully exit Gluttony