Ata' bin Abi Rabah (may Allah have mercy on him) said: A man broke another man's thigh. The dispute came before Sayyiduna Umar (may Allah be pleased with him). The man said: O Commander of the Believers! Get me retaliation. Sayyiduna Umar (may Allah be pleased with him) said: You will not get retaliation; you will get blood money. The man said: You have made me like the speckled snake: if it is killed it takes revenge, and if it is left alone it bites. Sayyiduna Umar (may Allah be pleased with him) said: You are indeed like the speckled snake.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الجنايات / 16098