Musannaf Ibn Abi Shaybah

Hazrat Aswad (may Allah have mercy on him) narrates that Hazrat Ka'b (may Allah be pleased with him) met me in Bayt al-Maqdis and asked: "Where have you come from?" I replied: "From the central mosque of Kufa." He (may Allah be pleased with him) said: "I too have come from there, from the place you have come from. And that place is more beloved to me than giving two thousand dinars in charity and placing each dinar in the hand of every needy person." Then, taking an oath, he said: "Surely that mosque is exactly in the middle of the earth, just as the base of a tray is."