Quran 8:32 from Surah Al-Anfaal on Divine Marvels.
وَإِذۡ قَالُواْ ٱللَّهُمَّ إِن كَانَ هَٰذَا هُوَ ٱلۡحَقَّ مِنۡ عِندِكَ فَأَمۡطِرۡ عَلَيۡنَا حِجَارَةٗ مِّنَ ٱلسَّمَآءِ أَوِ ٱئۡتِنَا بِعَذَابٍ أَلِيمٖ
English translation: And when they said O Allah If was this [it] the truth [of] from You then (send) rain upon us (of) stones from the sky or bring (upon) us a punishment painful
Transliteration: wa-idh qalu al-lahuma in kana hadha huwa al-haqa min indika fa-amtir alayna hijaratan mina al-samai awi i'tina bi'adhabin alimin