Rasoolullaah Sallallaahu ‘Alayhi Wa Sallam said “There is nothing dearer to Allaah during the days of Qurbaani than the sacrificing of animals. The sacrificed animal shall come on the Day of Judgement with its horns, hair, and hooves (to be weighed). The sacrifice is accepted by Allaah before the blood reaches the ground. Therefore sacrifice with an open and happy heart” (Tirmidhi).
Once the Companions asked; “O Rasoolullaah! (Sallallaahu ‘Alayhi Wa Sallam) What is Qurbaani?” He (Sallallaahu ‘Alayhi Wa Sallam) replied, “It is the Sunnah of your father lbraaheem (‘alayhis salaam).” They asked again, “What benefit do we get from it?” He (Sallallaahu ‘Alayhi Wa Sallam) answered, “A reward for every hair (of the sacrificed animal).” “And (what reward is there for animals with) wool, 0 Rasoolullaah (Sallallaahu ‘Alayhi Wa Sallam)?” they asked. “A reward“, he (Sallallaahu ‘Alayhi Wa Sallam) said, “for every fibre of the wool.” (Ibn Maajah)