Arabic hadith text
حَدَّثَنِي يَحْيَى، عَنْ مَالِكٍ، عَنْ نَافِعٍ، عَنْ سَالِمٍ، وَعُبَيْدِ اللَّهِ، ابْنَىْ عَبْدِ اللَّهِ بْنِ عُمَرَ أَنَّ أَبَاهُمَا عَبْدَ اللَّهِ بْنَ عُمَرَ، كَانَ يُقَدِّمُ أَهْلَهُ وَصِبْيَانَهُ مِنَ الْمُزْدَلِفَةِ إِلَى مِنًى حَتَّى يُصَلُّوا الصُّبْحَ بِمِنًى وَيَرْمُوا قَبْلَ أَنْ يَأْتِيَ النَّاسُ ‏.‏
Translation

Yahya related to me from Malik from Nafj from Salim andUbaydullah, two sons of Abdullah ibn Umar, that their father Abdullahibn Umar used to send his family and children from Muzdalifa to Minaahead of him so that they could pray subh at Mina and throw the stonesbefore everyone (else) arrived.