Hazrat Thabit (may Allah have mercy on him) narrates that Abu Barzah (may Allah have mercy on him) used to remain in a soiled state, and ‘A’id bin ‘Amr Muzani used to wear fine clothes. A man came to one of them and said,“Do you not see your other brother who wears such and such clothes and turns away from your style of dress?”He replied,“Who can be like him? He has such and such virtue, and he has attained such and such rank.”Then the man went to the other, and he gave the same answer as the first.

Hazrat Asma bint Yazid narrates that the Prophet (peace be upon him) said: The Greatest Name of Allah is in these two verses: { وَإِلَہُکُمْ إلَہٌ وَاحِدٌ لاَ إلَہَ إِلاَّ ہُوَ الرَّحْمَن الرَّحِیمُ } and in Surah Al-Fatiha and this verse of Surah Aal-e-Imran { الم اللَّہُ لاَ إلَہَ إِلاَّ ہُوَ الْحَیُّ الْقَیُّومُ }.

Hazrat Abdullah bin Buraidah (may Allah have mercy on him) narrates from his father that he (the Prophet e) heard a man supplicating: "O Allah, I ask You by the fact that You are Allah, the One, the Self-Sufficient, Who did not beget nor was begotten, and there is none comparable to Him." So he (the Prophet e) said: "You have supplicated to Allah by His Greatest Name; if He is supplicated by it, He grants, and if asked by it, He gives."

Hazrat Anas bin Malik (may Allah be pleased with him) narrates that the Messenger of Allah (peace and blessings be upon him) heard a man supplicating with these words: "O Allah, I ask You because all praise is due to You; there is no deity except You, You are One, You have no partner, the Most Gracious, the Originator of the heavens and the earth, Possessor of Majesty and Honor." So the Prophet (peace and blessings be upon him) said: "You have supplicated with Allah’s Greatest Name; when He is asked by it, He gives, and when supplicated by it, He responds."

It is narrated from Hazrat Ibn Sabit (may Allah have mercy on him) that someone supplicated during the time of the Noble Prophet e in these words: "Indeed, I ask You by Your Name, there is no deity except You, the Most Merciful, the Most Compassionate, the Originator of the heavens and the earth, and when You intend a matter, You only say to it 'Be,' and it is." So the Prophet e said, "You were near," or he said, "This man was very close to supplicating with the Greatest Name."

Hazrat Abu Darda and Ibn Abbas (may Allah be pleased with them) say that the Greatest Name of Allah is "Rabb".

Hazrat Abdul Malik bin Umair (may Allah have mercy on him) says that a man recited Surah Al-Baqarah and Aal-e-Imran, so Ka'b said that this person has recited two such Surahs in which there is such a Name that if supplication is made through it, it is accepted.

Hazrat Jabir bin Zaid (may Allah be pleased with him) says that the greatest name of Allah Almighty is "Allah".

Hazrat Sha’bi (may Allah have mercy on him) says that the Greatest Name of Allah is“Allah.”Then he or I recited from { ہُوَ اللَّہُ الْخَالِقُ الْبَارِیئُ المُصَوِّر } to the end of the Surah before him.

Hazrat Zumrah (may Allah have mercy on him) narrates that Abu Rayhanah (may Allah have mercy on him) once passed by some grain which the grain owners were dividing among themselves. He heard the sound of commotion and asked, "What is this noise?" The reply was given, "This is grain which the grain owners are dividing among themselves." So he prayed, "O Allah! Do not make this grain a trial for them," and he kept repeating this. It is unknown when his voice ceased.