On the Ash Tree Yggdrasil […] Harts there are also four, Which from its summit, Arch-necked, gnaw. Dâin and Dvalin, Duneyr and Durathrôr. – Grímnismál 33 –

I greet the sun! Rising from the darkness, Rising in the day. From the Ginnungagap, Of Yggdrasil ash, In your light, the spire shall grow. In your darkness, the spire shall die. – Wardruna – Dagr –