In cricket, a batsman may retire from an innings at any time when the ball is dead; they must then be replaced by a teammate who has not been dismissed). Retirement is covered by Law 25 of the Laws of Cricket, which distinguishes between two types of retirement. If the batsman is ill or injured, they are considered retired - not out and are permitted to return to batting if they recover. In all other cases, the batsman is considered retired - out and may not return to the innings, unless the opposing captain offers an exemption. These two types of retirement are considered differently in cricket statistics).
If a batsman retires without any injury or illness, they are considered retired out. A retired out batsman is not allowed to resume the innings, and this situation is recorded on the scorecard as retired - out and is considered a dismissal for statistical purposes, though it is not credited to a bowler. If a batsman retires for any other reason or without the umpires permission, they are considered to have forfeited their wicket and are therefore out. Unless the opposing captain offers an exemption, the retired batsmen may not return, and this situation is recorded on the scorecard as retired - out).
The main difference between retired hurt and retired out is that a batsman who is hurt will be allowed to continue their batting in the later stage of the game, while the case is not the same for retired out as it needs approval from the captain of the opposition team. Retired hurt has happened several times due to the injuries that occur on the field, while retired out is more of a tactical move.
