Difference between Fall into someone’s arms and Fall into someone’s hands

fall into someone’s arms—run up to a person to be held lovingly in both arms:

• With a cry of joy, she fell into his arms.

fall into someone’s hands—

1. be captured by a person:

• All those who fell into their hands alive were slain.

2. come into smb.’s possession:

• The two innkeepers had no idea what a treasure fell into their hands.

3. come under smb.’s control:

• Good citizens allowed politics to fall into the hands of mean men.