Narrated 'Irbad bin Sariyah:
that the Prophet (ﷺ) would recite the Musabbihat (Chapters 17, 57, 59, 61-64 & 87) before sleep and say "Indeed there is an Ayah in them that is better than one thousand Ayat." (ES)
English reference (ES): Vol. 5, Book 42, Hadith 2921 (ES)
Arabic reference (ES): Book 45, Hadith 3171 (ES)