Chant of Rest

You may select 1 allied creature who remains within 5ft of you throughout the casting of the spell. When the spell is cast, that creature may spend one of its HD without taking a short rest. If it does not have a HD of its own to use you, or another allied creature under the influence of this spell, may spend one of your own HD in its place. If none of the allied creatures affected by this spell have HD to spend, the spell is wasted.

At Higher Levels. If you cast this spell at 3rd level or higher, you may increase the number of HD allowed and allied creatures included by 1 for each spell slot above 2nd.