Wm Morrison Supermarkets grew like-for-like sales excluding fuel by 2.5% in the 13 weeks to 29 October.
Retail contributed 2.1% of this growth and Wholesale of 0.4%.
Like-for-like sales including fuel rose by 3.4%.
Total sales excluding fuel were up 2.3% and including fuel were up 3.2%.
Like-for-like transactions were up 2.1% as more customers continued to buy more from the supermarket.
The group said it worked hard to limit the impact of lower sterling on imported food prices, and made good progress on becoming more competitive.
For example, Price Crunch is popular with customers and the new Way Down campaign is holding prices lower for longer.
The supermarket's new automated ordering system is now fully operational in all stores.
The group said it is growing its Best premium own label range to almost 1,000 items and is extending the store pick home delivery catchment area in North East England.
David Potts, chief executive, said: "We are pleased with a further step up in our competitiveness and another period of positive like for like sales growth. I am confident our plans to keep serving customers better will enable us to continue the strong momentum of the year so far, into the important fourth quarter.
"As we work towards becoming a broader, stronger business, a new Morrisons is taking shape, built by our colleagues on firm balance sheet foundations."