Narrated by 'Adi bin Hatim (Radi-Allahu 'anhu):
The Prophet (Sallallahu 'Alaihi Wa Sallam) mentioned the (Hell) Fire and
sought refuge (with Allah) from it, and turned his face to the other side.
He mentioned the (Hell) Fire again and took refuge (with Allah) from it and
turned his face to the other side. (Shu'ba, the sub-narrator, said, "I have
no doubt that the Prophet repeated it twice.") The Prophet (Sallallahu
'Alaihi Wa Sallam) then said, "(O people!) Save yourselves from the (Hell)
Fire even if with one half of a date fruit (given in charity), and if this
is not available, then (save yourselves) by saying a good pleasant friendly
word."
Bukhari Vol. 8 : No. 52