Sayyiduna Umar (may Allah be pleased with him) said: Qays bin Asim al-Tamimi came to the Prophet (peace and blessings be upon him) and said: In the Jahiliyyah I buried eight daughters alive. So he (peace and blessings be upon him) said: "Free a soul on behalf of each one of them."
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الديات / 16424