Angered by the destruction of his ashrama, the Sage Apava (literally “Watery” see the poetic construct Water Ashrama destroyed by Agni (with aurva the hidden fire in water present in world)) cursed Kartavirya Arjuna that he who was renowned will be forgotten, another Arjuna will take his place, who will be the greatest Warrior and the greatest student.

I found this on a facebook post. Source