Sayyiduna Umar (may Allah be pleased with him) said: The aggravated blood money (diyah mughallazah) is 30 hiqqah, 30 jadha'ah, and 40 that have young in their bellies, and this is the blood money for quasi-deliberate killing (shibh al-'amd).
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الديات / 16121