After the kinslaying at Alqualondë, Mandos appeared on the shores of Aman in front of those of the houses of Fëanor, Finarfin and Fingolfin who intended to flee. He placed a curse on the exiles. This prophecy was as follows:

"Tears unnumbered ye shall shed; and the Valar will fence Valinor against you, and shut you out, so that not even the echo of your lamentation shall pass over the mountains. On the House of Fëanor the wrath of the Valar lieth from the West unto the uttermost East, and upon all that will follow them it shall be laid also. Their Oath shall drive them, and yet betray them, and ever snatch away the very treasures that they have sworn to pursue. To evil end shall all things turn that they begin well; and by treason of kin unto kin, and the fear of treason, shall this come to pass. The Dispossessed shall they be for ever. Ye have spilled the blood of your kindred unrighteously and have stained the land of Aman. For blood ye shall render blood, and beyond Aman ye shall swell in Death's shadow. For though Eru appointed to you to die not in Eä, and no sickness may assail you, yet slain ye shall be: by weapon and by torment and by grief; and your houseless spirits shall come then to Mandos. There long shall ye abide and yearn for your bodies, and find little pity though all whom ye have slain should entreat for you. And those that endure in Middle-earth and come now to Mandos shall grow weary of the world as with a great burden, and shall wane, and become as shadows of regret before the younger race that cometh after. The Valar have spoken."

After this prophecy was stated, Finarfin and his followers returned to Valinor in shame and begged for pardon by the Valar and he was declared the King of the Noldor in Aman.