It is narrated from Sayyiduna Zayd bin Thabit (may Allah be pleased with him) concerning the saying of Allah, the Mighty and Majestic, "The mosque whose foundation was laid on piety"; he said: "It is the mosque of the Messenger of Allah (peace and blessings be upon him)."
Hadith Referenceالمعجم الكبير للطبراني / باب الزاي / 4834