Sacrificing an animal – A means of seeking Allah’s pleasure
Sacrificing an animal on the day of Eid gains one the approval and pleasure of Allah Most High. There is a Hadith in Shu‘abul Iman to this effect:
Hadhrat Abu Hurairah (May Allah be well pleased with Him) narrates that the Holy Prophet (Sallallahu alaihi wa sallam) said: By virtue of slaughtering a sheep (or any other permissible animal) on the day of your Eid, your Lord will be pleased.
(Shu‘abul Iman, Hadith No. 7085)