Abu Mijlaz said: I asked Abdullah bin Umar (may Allah be pleased with them both) about a one-eyed man whose eye is put out. Abdullah bin Safwan (may Allah be pleased with him) said: Sayyiduna Umar (may Allah be pleased with him) ruled blood money for it. I said: I am asking Ibn Umar (may Allah be pleased with them both). He said: Is he not telling you the ruling of Sayyiduna Umar (may Allah be pleased with him)? The apparent meaning is that Sayyiduna Umar (may Allah be pleased with him) ruled the full blood money for it, but it is also possible that he ruled the blood money of one eye; and what appears from Ibn Umar (may Allah be pleased with them both) is that he did not hold that the full blood money is obligatory.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الديات / 16301