Superiority of the words la ilaaha ill Allah (There is no God bit Allah)

Narrated by Abdullah bin Amr bin Al- Aas (R.A) that Allah's messenger (pbuh) said, "On the day of Resurrection, Allah will bring a person from my Ummah from among the people; and spread before him ninety nine  registers (filled up with his deeds)

Each of them will be as long as sight extends. Then Allah will ask him,  "Do you deny any of it? Have my preserving writers treated you unjustly?"
The person will reply, "No, my Lord."
Allah will further ask him, "Do you have any excuse (for not having any good deeds)?"
He will say, "no my lord"

Allah will then observe, "Behold! We have preserved a virtue of yours with us. Today there will be no wrong with you.

Then Allah will take out a slip containing the words
"There is no God but Allah and that Muhammad is his messenger"
Allah will then address the person, "bring up your weights (of this slip).
The person will remark, "O Lord, This slip (is so light in weight) that it may not be matched with these large registers.
Allah will observe, "you will be done no injustice"

All the registers will then be plied up in one scale and the slip will be kept on the other side of the scale.

(with the grace of Allah), the scale with the registers will be raised up (due to light weight) while the scale having the slip will be heavier as there is nothing that weights more than the name of Allah.

(This Hadith is sound and reported by Tirmidhi, Ibn Majah and Ahmad)