Context for "there is a Jew behind me, come and kill him"

What context, if any, is there for the following, which is referred to in the charter of at least one major political organisation nowadays? > The Day of Judgement will not come about until Muslims fight the Jews, > when the Jew will hide behind stones and trees. The stones and trees > will say O Muslims, O Abdullah, there is a Jew behind me, come and > kill him. Only the Gharkad tree, (the Boxthorn tree) would not do that > because it is one of the trees of the Jews. (related by al-Bukhari and > Muslim)