Title 17, Chapter 8, Section 24
The illness or absence, from providential cause, of counsel where
there is but one, or of the leading counsel where there are more
than one, shall be a sufficient ground for continuance, provided
that the party making the application will swear that he cannot go
safely to trial without the services of the absent counsel, that he
expects his services at the next term, and that the application is
not made for delay only.