Hohenheim and Ed in “Unfinished Business”

"By looking at your body... I can guess that --"

"There's not much to tell... We failed a transmutation and I lost my arm and leg... Al lost his body. That's all."

"But Edward, Alchemy isn't something --"

"Shut up! You just can't show up here and start acting like a father. Not when we had to watch mom die without you. C'mon, Al."