an der Hand

on/by the hand

→ an
phrase Uncommon #21,721
on/by the hand Use “on” for something located on the hand and “by” when someone is holding another person’s hand.
GE: Das Kind hält seinen Vater an der Hand.
EN: The child is holding his father by the hand.

Haben Sie sich an der Hand verletzt?

Have you injured your hand?

Was hat er an der Hand?

What is wrong with his hand?

— Schmetterling und Taucherglocke (2007)

Er berührte sie an der Hand.

He touched her hand.

Was hast du da an der Hand?

What do you have on your hand?

— Harry Potter und der Orden des Phönix (2007)

Ich fasste meine kleine Schwester an der Hand, und wir liefen beide los.

I took my little sister by the hand, and we both set off.

Er hat sich beim Kochen an der Hand verletzt.

He injured his hand while cooking.

Tom hat sich bei seinem Sturz einen Schnitt an der Hand zugezogen.

Tom cut his hand when he fell.

Was hat der Mann an der Hand?

What does the man have on his hand?

— Der Himmel über Berlin (1987)

Wen hält sie an der Hand?

Who is she holding by the hand?