Sayyiduna Abu Hurayrah (may Allah be pleased with him) relates: "I was afflicted with severe hunger and hardship, so I came to Sayyiduna Umar (may Allah be pleased with him) and asked him about a verse of the Book of Allah (so that he would recite it to me and explain it). He went into his house, then he told me the verse. I had gone only a short distance from there when I fell on my face from the severity of hunger. Suddenly I saw the Messenger of Allah (peace and blessings be upon him) standing at my head. He (peace and blessings be upon him) said: 'Abu Hurayrah!' I said: 'O Messenger of Allah, here I am, at your service again and again.' Then I told him (peace and blessings be upon him) of my condition, and he (peace and blessings be upon him) understood my state and went to his house, then he ordered a large bowl of milk to be brought for me. I drank from it, and he (peace and blessings be upon him) said: 'Abu Hurayrah, drink again.' I drank again until my back straightened and became taut like an arrow. Then I met Sayyiduna Umar (may Allah be pleased with him), told him my whole story and said: 'Allah Almighty arranged it at the hands of the one among you who was most entitled to it. I had asked you to recite that verse to me although I knew it better than you.' Sayyiduna Umar (may Allah be pleased with him) said: 'By Allah, had I taken you into the house (at that time), that would have been dearer to me than red camels.'"
Hadith Referenceالمعجم الأوسط / باب الباء / 3271
Hadith Takhrij«أخرجه البخاري فى «صحيحه» برقم: 5375، وابن حبان فى «صحيحه» برقم: 7151، وأبو يعلى فى «مسنده» برقم: 6173»