In one of my favorite narrations, Ibn Masood (ra) reported that the Messenger of Allah (salAllahu alayhi wa salam) said, “I met Ibrahim (alayhis salam) on the Night of Ascension and he said to me: Oh Muhammad! Convey my greetings to your Ummah, and tell them that Jannah has a vast plain of pure soil and sweet water and is set as a plain leveled land. The plants grow there by uttering: SubhanAllah wal hamdulillah wa la ilaha ilallah wAllahu Akbar (Allah is free from imperfection, praise be to Allah, there is no true god except Allah, and Allah is Greatest).”[At-Tirmidhi].
These phrases of remembrance all individually have a multitude of narrations extolling their virtues. However, this narration is dear to my heart because look who is giving the advice, to whom it’s being given, and where it is being given!
If a person just constantly repeats these phrases all day long even as he works, Internet surfs, exercises, etc. How many trees in paradise would he be able to plant? Trees that have shade that extend thousands of miles and flowers that grow that would be admired for hundreds of years before moving on to the next one.
Why is this so important in Ramadan? Because the fasting of the tongue is the hardest form of fasting. Many fasts are rendered fruitless because of the negative use of the tongue. By repeating these phrases at all times, you protect the tongue from negative usage which starts from idleness.
The worldly benefits of these phrases are also not to be neglected, Fast forward to 17:43 of this lecture for an amazing story featuring the Imam of Ahlus Sunnah, Ahmad Ibn Hanbal (ra) http://www.youtube.com/watch?v=e8mEispyTb4