In SB 1.16.25, Shrila Prabupada writes that
The principles of religion are laid down by the Lord Himself, and the executor of such laws is Dharmaraja, or Yamaraja. Such principles work fully in the age of Satya-yuga; in the Treta-yuga they are reduced by a fraction of one fourth; in the Dvapara-yuga they are reduced to one half, and in the Kali-yuga they are reduced to one fourth.
We know that in kaliyuga, dharmaraja is standing on one leg i.e., is truthfulness.
In Treta-yuga which leg is absent and in Dvapara-yuga which legs are absent?