Translation of the verse 12 from Surah Al-Fath : Number of verses 29 - - page 512 - Part 26.
"Nay, but you thought that the Messenger (SAW) and the believers would never return to their families; and that was made fair-seeming in their hearts, and you did think an evil thought and you became a useless people going for destruction."
But you thought that the Messenger and the believers would never return to their families, ever, and that was made pleasing in your hearts. And you assumed an assumption of evil and became a people ruined."
(48:12) (But the truth is not what you say.) You had imagined that the Messenger and the believers would never return to their families, and this notion was embellished in your hearts. *23 You harboured an evil thought, and you are an immensely evil people.' *24
*23) That is,"You were delighted to think that you had saved yourselves from the danger into which the Messenger and his believing supporters were going. You thought you had done so by dint of your great wisdom; and you also did not feel any compunction in rejoicing at the thought that the Messenger and the believers would not return alive from their expedition. You did not feel uneasy in spite of your claim to the Faith but were pleased to think that you did not put yourselves in the danger by accompanying the Messenger. "
*24) The word ba- ir (pl.bur in the original) has two meanings: (1) A sinful, perverted and evil-minded person, who is incapable of doing anything good; and (2) one who is doomed to an evil end, who is following the path of destruction,