Don't own FMA. This is based on the classic song "He Ain't Heavy, He's my Brother" by the Hollies. It's a Timeline, What Timeline? deal, so just enjoy the story
You're Not Heavy, You're My Brother
Ed and Al walked slowly from the Risembool train station, heading towards Pinako's house. They had just returned from a remote ghost town, where they had finally found the Philosophers Stone and had just used it when the homunculi jumped them. They managed to beat them, and barely got out with their lives. Ed turned to his newly- restored brother. "You ok, Al?"
Al looked at Ed. They were both sporting multiple cuts and bruises, and Ed's automail arm was barely able to move. Yet Ed was asking how he was. "I'm ok, Brother." Al actually felt weak, from the fight and from adjusting to his restored body. But he didn't want to worry Ed.
Ed looked at Al, not believing him. He lifted Al onto his back and carried him.
"Brother, you shouldn't!" Al protested, yet glad to be off his feet.
"Yes, I should, Al. You just got restored, we had a battle right after, and it's a long way to Pinako's house." replied Ed, "Your welfare is my main concern right now."
"And your welfare is mine, Brother. It always has been," replied Al. "But, with your arm being out of whack.."
"My arm will hold out, Al. No worries. You're not heavy, you're my brother." Ed said, smiling.
"So on we go," said Al, leaning his head on Ed's shoulder.