Bismillahir Rahmaanir Raheem
Rasulullah (Sallallaahu ‘alayhi wasallam) said: "There is nothing dearer to Allah 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 Allah before the blood reaches the ground. Therefore sacrifice with an open and happy heart."
[Tirmidhi, Ibne Majah]
Zaid lbn Arqam (Radhiyallaahu ‘anhu) relates that the Sahabah (Radhiyallaahu ‘anhum) queried, “O Rasulullah (Sallallaahu ‘alayhi wasallam): What is Qurbaani?”
He (Sallallaahu ‘alayhi wasallam) replied: “It is the Sunnah of your father lbraheem (Alayhis Salaam).”
They again asked: “What benefit do we derive from it?”
He (Sallallaahu ‘alayhi wasallam) answered: “A reward for every hair (of the sacrificed animal).”
“And (what reward is there for animals with) wool, O’ Rasulullah (sallallahu alayhi wasallam)?” they asked.
“A reward”, he said, “for every fibre of the wool.”
“When a person slaughters a Qurbaani animal, he is forgiven at the fall of the first drop of blood, and verily, the animal shall be brought forward on the Day of Judgment
with its blood, meat, limbs, etc. and shall be increased in weight seventy times,
and then placed on the scale of deeds.”