حَدَّثَنَا حَدَّثَنَا أَبُو بَكْرٍ النَّيْسَابُورِيُّ ، ثنا عِيسَى بْنُ أَبِي عِمْرَانَ ، ثنا الْوَلِيدُ بْنُ مُسْلِمٍ ، ثنا زَيْدُ بْنُ وَاقِدٍ ، عَنْ نَافِعٍ ، قَالَ : " كَانَ ابْنُ عُمَرَ إِذَا رَأَى رَجُلا يُصَلِّي لا يَرْفَعُ يَدَيْهِ كُلَّمَا خَفَضَ وَرَفَعَ حَصَبَهُ حَتَّى يَرْفَعَ " .
Nafi' reports: Whenever Abdullah bin Umar (may Allah be pleased with them both) saw a person who did not raise his hands while bowing in prayer, he would pick up pebbles to throw at him until that person started raising his hands.