Here are some potential examples of when you might be thinking of:
* Episode 20 (Brotherhood): During the battle with Lust, Ed carries a wounded Winry away from danger.
* Episode 27 (Brotherhood): After Winry is knocked unconscious in the attack on Central, Ed carries her to safety.
* Episode 49 (Brotherhood): After escaping from the prison, Ed helps an injured Winry.
* Other instances: There are likely other moments where Ed carries Winry in both the original FMA and Brotherhood series, especially when she's injured or in need of help.
To be sure, you would need to provide more context, such as what happens before and after the scene or what specific episode/season you are watching.