In folklore, giving a brownie clothing causes it to leave its home forever.
Brownies are usually described as naked or dressed in rags, and traditional stories treat clothing as a dangerous gift. The spirit may interpret the offer as an insult, as an attempt to make it a regular servant, or as permission to abandon its obligations. Once the clothing is accepted, or sometimes merely presented, the brownie disappears and refuses to work for the household again.
This motif was recorded in English folklore by at least 1584, when Reginald Scot’s The Discoverie of Witchcraft described a brownie-like spirit disappearing after receiving clothes. Later stories add shirts, coats, hoods, or complete outfits, often followed by a rhyme announcing the spirit’s departure.
The rule is not universal in every tale. Some brownies are said to want clothing, and the Cauld Lad of Hilton reportedly vanished even after receiving garments he seemed to welcome. Still, clothing is the standard canonical answer and is distinct from ordinary offerings such as milk or porridge.