Muwatta Malik #960
Hajj
The Arabic includes the chain of narration (sanad) and the collector's commentary; the English translation shows the Prophet's words only.
وَحَدَّثَنِي عَنْ مَالِكٍ، عَنْ نَافِعٍ، أَنَّ عَبْدَ اللَّهِ بْنَ عُمَرَ، كَانَ يَقُولُ مَنْ غَرَبَتْ لَهُ الشَّمْسُ مِنْ أَوْسَطِ أَيَّامِ التَّشْرِيقِ وَهُوَ بِمِنًى فَلاَ يَنْفِرَنَّ حَتَّى يَرْمِيَ الْجِمَارَ مِنَ الْغَدِ .
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."
Yahya
related to me from Malik from Nafi that Abdullah ibn Umar used to say,
"Someone who is at Mina when the sun sets in the middle of the days of
tashriq must not leave until he has stoned the jamras on the following
day."
About Muwatta Malik
This hadith is #960 from Muwatta Malik, in the Book of Hajj.