It's an icon with a hand holding a rectangular foul card. The foul card is held between the thumb of the hand and the fingers, and the person is holding the the foul card with his right hand.
This is a Foul icon. We've made it in iOS style
, first introduced in iOS version 7 and supported in all later releases up until now (at least iOS 11). This style is based on thin two-pixel lines and is optimized for 50x50 px. Unlike other vector icon packs that have merely hundreds of icons, this icon pack contains 13,100 icons, all in the same style and quality.