Surah Ash-Shu'ara, Verse 187

فَأَسۡقِطۡ عَلَيۡنَا كِسَفٗا مِّنَ ٱلسَّمَآءِ إِن كُنتَ مِنَ ٱلصَّٰدِقِينَ١٨٧

fa-asqiṭ ʿalaynā kisafan mina l-samāi in kunta mina l-ṣādiqīna

So cause to fall upon us fragments of the sky, if you should be of the truthful."