90 Preface وَقالوا لَن نُؤمِنَ لَكَ حَتّىٰ تَفجُرَ لَنا مِنَ الأَرضِ يَنبوعًاYusuf AliThey say: “We shall not believe in thee, until thou cause a spring to gush forth for us from the earth,1Cf. 2:60.