If the board of supervisors or city council modifies and refers a proposed action back to the planning commission pursuant to Section 65356 or 65857, the board of supervisors or city council, as the case may be, shall at the same time refer the modification to the proposed action to each affected city or county in accordance with Sections 65919.8 and 65919.9.
Source:
Section 65919.7, https://leginfo.legislature.ca.gov/faces/codes_displaySection.xhtml?lawCode=GOV§ionNum=65919.7..