Is it permissible to sell a plot of land in the West Bank to an Arab merchant whom we suspect might sell it to Jews, given our urgent need to sell and his refusal to disclose its fate?

Fatwas have been issued by Muslim scholars in various countries prohibiting the sale of Palestinian lands to Jews, because it fulfills the aims of Zionism in Judaizing the land. Therefore, the inquirer's and her siblings' diligence in avoiding the sale of land to Jews is a legitimate requirement for which they will be rewarded. If it becomes apparent that the broker sells to Jews, then it is not permissible to sell to him. However, if that is not apparent, then there is no harm, along with advising him by explaining the impermissibility of selling to Jews. He will bear the burden of whatever he does thereafter.