Yahya related to me from Malik from Nafi that Abdullah ibn Umar used to say "Allah is greater" whenever he threw a pebble while stoning the jamra.
Yahya related to me from Malik that he had heard some of the people of knowledge saying, "The pebbles used for stoning the jamras should be like the stones used as slingshot." Malik said, "I like it better if they are a little larger than that."
أَنَّ عَبْدَ اللَّهِ بْنَ عُمَرَ كَانَ يُكَبِّرُ عِنْدَ رَمْىِ الْجَمْرَةِ كُلَّمَا رَمَى بِحَصَاةٍ
وَحَدَّثَنِي عَنْ مَالِكٍ أَنَّهُ سَمِعَ بَعْضَ أَهْلِ الْعِلْمِ يَقُولُ الْحَصَى الَّتِي يُرْمَى بِهَا الْجِمَارُ مِثْلُ حَصَى الْخَذْفِ قَالَ مَالِكٌ وَأَكْبَرُ مِنْ ذَلِكَ قَلِيلاً أَعْجَبُ إِلَىَّ