1. There are many hadith of the Prophet Muhammad (peace be upon him) about the power of this phrase, “SubhanAllah wa bihamdihi“, which means, “Glory to Allah and praise Him.”
Whoever says “SubhanAllah wa bihamdihi” a hundred times during the day, his sins are wiped away, even if they are like the foam of the sea. [Sahih al-Bukhari; #7:168, Sahih Muslim; #4:2071]
2. Radhitu billahi Rabba, Wa bil Islami deena, Wa bimuhammadin salla Allahu ‘alayhi wa sallam, Nabiyyan
3. Rabbana taqabbal minna innaka antas Sameeaul Aleem
“Our Lord! Accept (this service) from us: For Thou art the All-Hearing, the All-knowing” [2:127]
4. Rabbana wa-j’alna Muslimayni laka wa min Dhurriyatina ‘Ummatan Muslimatan laka wa ‘Arina Manasikana wa tub ‘alayna ‘innaka ‘antat-Tawwabu-Raheem
” Our Lord! Make of us Muslims, bowing to Thy (Will), and of our progeny a people Muslim, bowing to Thy (will); and show us our place for the celebration of (due) rites; and turn unto us (in Mercy); for Thou art the Oft-Returning, Most Merciful” [2:128]
5. SubhanAllah, walHamdulilah, wa La illaha ilAllahu, waAllahu Akbar
(Glory be to Allah, All Praise is for Allah, There is No God but Allah, Allah is the Greatest).
Abu Sa`id reported that the Prophet (salAllahu alayhi wasalam) said, “Perform the enduring goods deeds (al-baaqiyaat al-SaliHaat) more frequently.” They asked, “What are these enduring good deeds?
” The Prophet replied: Takbir [Allahu Akbar], Tahlil [la ilaha illallah], Tasbih [Subhan’Allah], alhamdulillah, and la hawla wa la quwwata illa billah. [Sahih Muslim; #3:1685]
The above are mentioned as the four most beloved words to Allah.