Abdullah bin Dinar reports from Ibn Umar (may Allah be pleased with them both) that the Messenger of Allah (peace and blessings be upon him) sent out an army and made Usamah bin Zayd its commander. Some people criticised his command, so the Messenger of Allah (peace and blessings be upon him) said: "If you criticise his command, you criticised the command of his father before him as well. By Allah, he (his father) was indeed worthy of command; his father was among the people most beloved to me, and this one is among the people most beloved to me after him."
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الصلاة / 5343