Sunan Ibn Majah Book 33, Hadith 150
the Messenger of Allah (ﷺ) said: 'Two words which are light on the tongue and heavy in the Balance, and beloved to the Most Merciful: Subhan-Allah wa bi hamdihi, Subhan-Allahil-'Azim (Glory and praise is to Allah, glory is to Allah the Almighty)."
the Messenger of Allah (ﷺ) said: 'Allah does not bestow a blessing upon any slave and he says: 'Al-hamdu Lillah (praise is to Allah),' except that what he gives (the praise) is better than what he received (the blessing)."
the Messenger of Allah (ﷺ) passed by him when he was planting a plant, and said: "O Abu Hurairah, what are you planting?" I said: "A plant for me." He said: "Shall I not tell you of a plant that is better than this?" He said: "Of course, O Messenger of Allah." He said: "Say: 'Subhan-Allah, wal-hamdu-lillah, wa la ilaha illallah, wa Allahu Akbar (Glory is to Allah, praise is to Allah, none has the right to be worshiped but Allah and Allah is the Most Great.)' For each one a tree will be planted for you in Paradise."