Prophet Muhammad (pbuh) has said that on the day of judgement
there will be some people who will have to go to jahannam
because of their bad deeds.
However, from these people, there will be some who had the
habit of saying Bismillahirrahmaanirraheem (I begin in the
name of Allah, the Kind, the Merciful) before they did
anything or entered anywhere.
Thus, when they will be taken to jahannam by the angels,
they will be very sad but they will say Bismillahirrahmaanirraheem
(I begin in the name of Allah, the Kind, the Merciful)
before they enter the door of jahannam.
Allah will tell the angels – “STOP”
He will tell them that He cannot let someone who calls Him
Rahmaan and Raheem (Kind & Merciful) enter jahannam.
Excellent Stories Vol 1