I am trying to get AppServicePlan associated with an AppService (WebJob) using PowerShell.

I tried below 2 cmdlets but am not getting the what I need.

Get-AzWebApp -ResourceGroupName $azResource.ResourceGroupName -Name $azResource.Name
Get-AzAppServicePlan

Can someone tell me how to get the associated AppServicePlan of a AppService (WebJob) using PowerShell.