Toulouse claimed a famous double as they hammered Bordeaux-Begles in the Top 14 final, winning 59-3 in a nine-try showing at Stade Velodrome on Friday.
Leinster were unable to shed their losing habit in Champions Cup finals after they were edged 31-22 by Toulouse with only extra time separating the rivals at Tottenham Hotspur Stadium.
French champions Toulouse and Challenge Cup winners Toulon have been fined by the French league administrative body for salary cap irregularities.
France's President Emmanuel Macron did not pass up the opportunity to join Toulouse's celebrations after defeating La Rochelle 29-26 in the Top 14 Final.
Ruthless Leinster reached another Heineken Champions Cup final after they scored 28 points during two sin-bin periods to beat Toulouse 41-22 at the Aviva Stadium.
Leinster head coach Leo Cullen expects Toulouse to take his team on physically in Saturday's clash of the Heineken Champions Cup heavyweights.