A petition under this article shall state the grounds upon which relief is requested, and shall be supported by the affidavit of the petitioner or the petitioner’s attorney setting forth a concise statement of the facts upon which the motion is based.
The petition and affidavit shall be in substantially the form prescribed by the Judicial Council.
Source:
Section 765.020, https://leginfo.legislature.ca.gov/faces/codes_displaySection.xhtml?lawCode=CCP§ionNum=765.020..