My father’s ex-partner stole items, we also had low cashflow for months. (I also worked there) My Father also saw him how he wanted to steal items from the workshop. I was shocked hearing this. Was it backbiting from me since I only listened?

Ustadh AbdulAziz al-Haqqan

No, if he told u that, he is informing u to be carefully and maybe advise him in regards to how to deal with this.