Search - Hybrid

Hi 

Scenario: About to launch a new intranet based on SPO - but business demands that when doing a search in Office 365/SPO it also shows a results set from the SharePoint 2013 'On-Prem' Farm. 

The On-Prem farm are going to be 'fased out' shortly after launch - so no need to configure a results set "on-prem", that shows content from SPO   

Are there any guides / how-to that describes what is needed to configure in SPO and in SP 'On_Prem'  ?