The Advocate General, the Lord Advocate or the Attorney General may refer the question of whether a Bill or any provision of a Bill relates to a protected subject-matter to the Supreme Court for decision.
Subject to subsection (3), he may make a reference in relation to a Bill—
at any time during the period of four weeks beginning with the rejection of the Bill, if the Presiding Officer has made a statement under section 31(2A) that in his view any provision of the Bill relates to a protected subject-matter, and
at any time during the period of four weeks beginning with the passing of the Bill, if the Presiding Officer has made a statement under section 31(2A) that in his view no provision of the Bill relates to a protected subject-matter, unless the number of members voting in favour of the Bill at its passing is at least two-thirds of the total number of seats for members of the Parliament.
He shall not make a reference in relation to a Bill if he has notified the Presiding Officer that he does not intend to make a reference in relation to the Bill, unless since the notification the Bill has been approved or rejected in accordance with standing orders made by virtue of section 36(5).