Al-Nawawi said in his book "The Selected Remembrances from the Words of the Righteous Master": “The chapter on what is said in the morning and evening: know that this chapter is very broad, and there is no chapter in the book that is broader than it. I mention, if Allah wills, in it a few of its abbreviations. Whoever is successful in doing all of them, then it is a blessing and favor from Allah Almighty upon him and blessed be upon him, and whoever is unable to do all of them, let him limit to their abbreviations to whatever he wants, even if it is a single remembrance.