It is narrated from Sayyiduna Abdullah bin Amr bin al-As and Sayyiduna Sahl bin Sa'd (may Allah be pleased with them both) that they both said that the Messenger of Allah (peace and blessings be upon him) said: "Allah, the Mighty and Majestic, is behind seventy thousand veils of light and darkness, and no soul hears anything of the sound of those veils except that it departs."
Hadith Referenceالمعجم الكبير للطبراني / باب السين / 5781