There's a nice halal grocery store right by the mosque with great quality meats, poultry etc., operated by the Tatars. Decent service in Russian or Tatar language. Halal meats are also available from the out of town vendors but you have to hook up with a local Moslem to carpool there and split the purchase. Call the ethnic restaurants in advance, because very often their stuff is NOT halal. Maassalaam!
No.7, Vipolsov by street