وَقَالُواْ لَن نُّؤۡمِنَ لَكَ حَتَّىٰ تَفۡجُرَ لَنَا مِنَ ٱلۡأَرۡضِ يَنۢبُوعًا
Wa qaaloo lan nu'mina laka hattaa tafjura lanaa minal ardi yamboo'aa
English Translation
And they say, "We will not believe you until you break open for us from the ground a spring
— Saheeh International