لَا إِلَهَ إِلَّا اللَّهُ
Transliteration
La ilaha illallah
English meaning
There is no deity except Allah.
When is it recited?
The dying person is gently reminded of the testimony of faith.
Its virtue
Whoever's last words are 'La ilaha illallah' will enter Paradise.
Source
Muslim, Jana'iz 1, 916; Abu Dawud, Jana'iz 16, 3117