§ Of Maeglin The Silmarillion

But when she came to the Ford of Brithiach in the River Sirion she said to her companions: 'Turn now south and not north, for I will not ride to Hithlum; my heart desires rather to find the sons of Fëanor, my friends of old.' And since she could not be dissuaded they turned south as she commanded, and sought admittance into Doriath. But the march-wardens denied them; for Thingol would suffer none of the Noldor to pass the Girdle, save his kinsfolk of the house of Finarfin, and least of all those that were friends of the sons of Fëanor. Therefore the march-wardens said to Aredhel: 'To the land of Celegorm for which you seek, Lady, you may by no means pass through the realm of King Thingol; you must ride beyond the Girdle of Melian, to the south or to the north. The speediest way is by the paths that lead east from the Brithiach through Dimbar and along the north-march of this kingdom, until you pass the Bridge of Esgalduin and the Fords of Aros, and come to the lands that lie behind the Hill of Himring. There dwell, as we believe, Celegorm and Curufin, and it may be that you will find them; but the road is perilous.'