In the narration which Abu Yahya al-Saji (may Allah have mercy on him) reported with his chain from Sayyiduna Mu'adh bin Jabal (may Allah be pleased with him) as marfu' (attributed to the Prophet): "And for (destroying) the intellect there are one hundred camels (as diyah)."
We have already mentioned our own chain for it, and a report has reached us from Sayyiduna Umar bin al-Khattab (may Allah be pleased with him) indicating that he ruled the full diyah for (destroying) the intellect.
Abu al-Muhallab (may Allah have mercy on him) said that a man struck another on the head with a stone, and he lost his hearing, his speech, his intellect and his virility, so Sayyiduna Umar (may Allah be pleased with him) ruled four diyahs for him.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الديات / 16228