It shall not be lawful for a local church, its officers, or members, to send appeals to other local churches, their officers, and members, to solicit money or financial assistance for their local church needs or for the interests that they may support. It is provided, however, that such solicitation may be made to local churches and church members located within the bounds of the assembly district in which the solicitor is located, but only on condition that the solicitation be approved in writing by the district superintendent and the District Advisory Board.