The beloved and blessed Prophet (SallAllahu Alayhi wa Sallam) said,

"On the day of Eid al-Adha, no other good deed of man is dearer to Allah than shedding blood (of sacrificial animal). On the Day of Judgement, the sacrificed animal will come with its horns, hair and hooves. Allah accepts the sacrifice before the blood of the sacrificed animal reaches the ground. Therefore, perform sacrifice whole-heartedly." [Tirmidhi, Vol. 3, Page 162, Hadith 1498]

Hadrat Sayyiduna Shah Abdul Haq Muhaddith Dehlawi (Alayhir Rahmah) says,

"Qurbani (sacrifice) will be placed onto the pan of the good deeds of its performer, increasing the weight of his good deeds." [Ash'at al-Lam'aat, Vol. 1, Page 654]

Hadrat Mulla Ali Qari (Alayhir Rahmah) says,

"Then, for its performer, the sacrifice will serve as a conveyance whereby he would pass the bridge of  Siraat easily. Further, every organ of the sacrificed animal will be Fidyah (expiation) for every organ of its owner." [Mirqat al-Mafatih, Vol. 3, Page 574, Hadith 1470]