Section 13. Fact which becomes qarinah when right or 'urf is in question
Where the question is as to the existence of any right or 'urf, the following facts are qarinah:
(a) any transaction by which the right or 'urf in question was created, claimed, modified, recognized, asserted or denied or which was inconsistent with its existence;
(b) particular instances in which the right or 'urf was claimed, recognized or exercised or in which its exercise was disputed, asserted or departed from.