Sticky Fingers (5e Feat)
From D&D Wiki
Prerequisites: Dexterity 13+, Sleight of Hand proficiency
Even in the heat of battle, you can't fight your kleptomania. When you use an Unarmed Strike or Flurry of Blows, you can replace any of the attacks with attempts to pickpocket your target, making a contest of your Dexterity (Sleight of Hand) skill against their Strength (Athletics) or Dexterity (Acrobatics) skill. Alternatively, you can instead attempt to disarm the target, making the same contest. Any items you remove from their grasp are within your free hand.