If you have used vinegar in your washing machine to clean or to do laundry, then you do not need to run a rinse cycle afterward as a standard laundry cycle runs a plain water cycle towards the end anyway to remove any residue left behind.
Do you need to rinse after washing with vinegar?
The same goes for using vinegar with fabric softener. While it may sound like it will offer a better clean, the pH of the acidic vinegar will prevent the detergent from working correctly, leading to a worse clean than if you had used one product or the other independently. You should not mix laundry detergent and vinegar together when doing laundry. View Deal FAQs Can I use vinegar and laundry detergent together?