`Sayyiduna Abdullah bin Umar (may Allah be pleased with them both) narrates from the Noble Prophet (peace and blessings be upon him) that` he (peace be upon him) said: I was sleeping and in my sleep a bowl was brought before me in which there was milk. I drank from it until freshness and satisfaction began to come out from my fingernails. Then what was left, I gave to Umar bin Khattab. The people asked, "O Messenger of Allah! What is its interpretation?" He (peace be upon him) said: Its interpretation is knowledge.