Hafiz Abu Nasr al-Kalabadhi (may Allah have mercy on him) said that Sayyiduna Umar bin Abi Salamah (may Allah be pleased with him) was nine years old when the Prophet (peace and blessings be upon him) passed away, and Umar bin Abi Salamah (may Allah be pleased with him) died during the caliphate of Abd al-Malik bin Marwan.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب النكاح / 13753