the Prophet (ﷺ) said: "(There are) four that are the best of words, and it does not matter with which you begin: 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)."
Sunan Ibn Majah Book 33, Hadith 155
← Previous Hadith "I came to the Messenger of Allah (ﷺ) and said: 'O Messenger of Allah, tell me of a (good) deed, for I have become old and weak and overweight.' He said: 'Proclaim the greatness of Allah (say Allahu Akbar) one hundred times, praise Allah (say Al-Hamdu Lillah) one hundred times, and glorify Allah (say Subhan-Allah) one hundred times. (That is) better than one hundred horses bridled and saddled for the sake of Allah, better than one hundred sacrificial camels, and better than (freeing) one hundred slaves.'"

Sunan Ibn Majah Book 33, Hadith 154 Next Hadith → the Messenger of Allah (ﷺ) said: "Whoever says: Subhan Allahi wa bi hamdihi (Glory and praise is to Allah) one hundred times, his sins will be forgiven even if they were like the foam of the sea.'"

Sunan Ibn Majah Book 33, Hadith 156