فَأَسْقِطْ عَلَيْنَا كِسَفًا مِّنَ ٱلسَّمَآءِ إِن كُنتَ مِنَ ٱلصَّـٰدِقِينَ ١٨٧
So cause to fall upon us fragments of the sky, if you should be of the truthful."
Your location stays on this device and is only sent, rounded to about 1 km, to fetch the times.