Sayyiduna Abu Sa'id Khudri (may Allah be pleased with him) narrates: There was a dispute between two men regarding the mosque which was founded on piety. One person said: It refers to the mosque of Quba, while the other said: It refers to the mosque of the Prophet (peace and blessings of Allah be upon him). So the Prophet (peace and blessings of Allah be upon him) said: "It refers to this mosque of mine." (Imam Abu Hatim says:) Both of its chains are preserved.