حَدَّثَنِي يَحْيَى، عَنْ مَالِكٍ، أَنَّهُ بَلَغَهُ أَنَّ عُمَرَ بْنَ الْخَطَّابِ، كَانَ يَقِفُ عِنْدَ الْجَمْرَتَيْنِ الأُولَيَيْنِ وُقُوفًا طَوِيلاً حَتَّى يَمَلَّ الْقَائِمُ ‏.‏

Yahya related to me from Malik that he had heard that Umar ibnal-Khattab used to stop at the first two jamras for such a long timethat someone standing up would get tired. Translation Not Available

Book Ref: Muwatta Imam Malik Book 20 Hadith 917
Web Ref:  Muwatta Imam Malik Book 20 Hadith 220