If to Manar mall, then definitely here, the local Auchan.
The assortment is large, there are appliances, even branded ones, prices are relatively cheap, not counting imported products. The best place to buy dates and souvenirs home is here. Clothes are very cheap T-shirts 10-15 dirhams, towel 5-7 dirhams, underpants 5 dirhams. If you take the local produce here, the price is cheap, everything else is expensive, even tea, which costs 15 dirhams for 20 sachets. We took dates in chocolate, it is better to take them by weight, so it turns out more and cheaper than in cartons. I also advise local pineapple juice, not diluted at all, very tasty, price 1-1.5 dirhams hb 0.25