قَالَ مَالِكٌ : الضَحِيَّةُ سُنَّةٌ وَلَيْسَتْ بِوَاجِبَةٍ . وَلا أُحِبُّ لأَحَدٍ مِمَّنْ قَوِيَ عَلَى ثَمَنِهَا، أَنْ يَتْرُكَهَا
Imam Malik, may Allah have mercy on him, said: Sacrifice is Sunnah, not obligatory. And it is not good for a person who can afford to buy a sacrifice to abandon it.