Sacrifice of an animal is not the order of God. Animal sacrifice is not mentioned in the Holy Quran. This practice is arbitrary and has been propagated by ignorant mullah / Qazis. It is a cause of great sin. Quran does not advocate sin. All the creatures are children of God, and God is never pleased if someone kills His beings. Slaughter in the name of God or religion is a wrong practice and a cause of great distress in the human society.
Saint Rampal Ji has given this supreme knowledge.