Musannaf Ibn Abi Shayba 21:318

Abu Dawud Umar ibn Sa'd narrated to us, from Yunus ibn al-Harith, from Amr ibn Shu'ayb, from Abdullah ibn Amr, who said: "Whoever says 'Subhan Allah al-Azim wa bihamdihi' (Glory be to Allah the Almighty and with His praise), a palm tree is planted for him in Paradise because of it."