It is narrated from Sayyiduna Abu Ayyub (may Allah be pleased with him) that Nauf and Sayyiduna Abdullah bin Amr (may Allah be pleased with him) both gathered together. Nauf said: If the heavens, the earths, and all the creatures between them are placed on one side of a scale, and "La ilaha illallah" is placed on the other side, the latter side will outweigh the former. And if the heavens, the earth, and all the creatures between them are made into a layer of iron and "La ilaha illallah" is placed upon it, then this word will pierce through it and reach Allah Almighty.

Kathir bin Murrah says: Sayyiduna Mu'adh bin Jabal (may Allah be pleased with him) said during his illness of death: I heard a hadith from the Messenger of Allah (peace and blessings be upon him), I kept it hidden from you, now I am narrating it. The Prophet (peace and blessings be upon him) said: Whoever's last words are "La ilaha illallah" (There is no god but Allah), Paradise will become obligatory for him.