It is narrated from Sayyiduna Mu'adh bin Anas al-Juhani (may Allah be pleased with him) that the Prophet (peace and blessings be upon him) said: "Whoever says 'Subhan Allah al-Azim' (Glory be to Allah, the Magnificent), a tree is planted for him in Paradise. And whoever recites the Qur'an, holds it firmly and acts upon it, Allah Almighty will place upon his parents on the Day of Resurrection a crown whose light will be more beautiful than this moon."
Hadith Referenceالمعجم الكبير للطبراني / باب الميم / 17579