Fiars is an expression in old Scots law

Scots law

Scots law is the legal system of Scotland. It is considered a hybrid or mixed legal system as it traces its roots to a number of different historical sources. With English law and Northern Irish law it forms the legal system of the United Kingdom; it shares with the two other systems some...

 given to the prices of grain which are determined, by the respective sheriffs in the various counties assisted by juries.

The Court for "Striking the fiars" is held towards the end of February in accordance with Act of Sederunt

Act of Sederunt

Act of Sederunt in Scots law, is an ordinance for regulating the forms of judicial procedure before the Court of Session , Sheriff Courts in civil session, and for setting fees for Messengers-at-arms and Sheriff officers...

 of the Court of Session

Court of Session

The Court of Session is the supreme civil court of Scotland, and constitutes part of the College of Justice. It sits in Parliament House in Edinburgh and is both a court of first instance and a court of appeal....

. The prices fixed are used in the settling of contracts where no prices have been determined upon, e.g. in fixing stipends of ministers of the Church of Scotland

Church of Scotland

The Church of Scotland, known informally by its Scots language name, the Kirk, is a Presbyterian church, decisively shaped by the Scottish Reformation....

, and are found useful in other ways.