Warning on not sacrificing an animal
Allah Most High has decreed sacrifice of an animal for those who can afford it and has given glad tidings of reward on doing so, as we have seen. On the other hand, for the person who does not do so in spite of having the ability, there are severe warnings in Hadith:
Hadhrat Abu Hurairah (May Allah be well pleased with him) narrates that the Holy Prophet said: The one who is able to sacrifice an animal, but does not do so, should never come near our Eidgah (place where Salaat Ul Eid is offered).
(Shu‘abul Iman, Hadith No. 7083)