Musannaf Ibn Abi Shaybah

Hazrat Abu al-Jarrah narrates that a man from the people of Hijaz stated: My wife said to me, "Bring Hazrat Abu Hurairah to me so that I may ask him for a fatwa regarding myself." So I went to him, and he came with me. When we reached the door, he said, "Enter the house." So I entered and said, "Hazrat Abu Hurairah has come." He said, "As-salamu alaikum, may I enter?" We said, "Enter in peace." He said again, "As-salamu alaikum, may I enter?" We again said, "Enter in peace." He said, "You should say, 'Enter.'" He asked, "As-salamu alaikum, may I enter?" We said to him, "Enter." So he entered.