The Harden Triple Double: 10 assists, 10 free throw attempts, 10 three point attempts. Harden has 41 of them. The rest of the league have 50 combined! http://bkref.com/tiny/c3HBx
And the Quadruple Double would be 10 3FA 10 FTA 10 assists 10 layups made I bet that 60pt Triple double, or one of the 50 pointers, achieved said quad. We can definitely verify with video at nba.com stats.
Yeah, Curry's shots mostly come of passes with no dribble, so he misses either the free throw criteria or the assist criteria enough to have only 1 of those....due to his style. At volume, Curry can't create enough threes for himself, so what lets him set historical records for efficiency actually takes away his ability to create for others and get fouled.