Starting and stopping HA Service on Pi

I am trying to start and stop service from Raspberry Pi Command line.

What will be the commands? I am running HA OS on Pi…

I know we can reboot Pi, or stop service via Server control. But I don’t want to reboot Pi to start it again. Just want to do some testing by stopping and starting service as I want to build it from scratch again. Can do via UI or some systemctl command ?

ha core stop
ha core start