Which stage had suhardi hassan in the Malaysian rider classification?
CREATE TABLE "classification_leadership" (
  "stage" text,
  "stage_winner" text,
  "general_classification" text,
  "points_classification" text,
  "mountains_classification" text,
  "malaysian_rider_classification" text,
  "team_classification" text
);
SELECT "stage" FROM "classification_leadership" WHERE "malaysian_rider_classification"='suhardi hassan';