Arabic hadith text
وَحَدَّثَنِي عَنْ مَالِكٍ، عَنْ نَافِعٍ، أَنَّ عَبْدَ اللَّهِ بْنَ عُمَرَ، كَانَ يُصَلِّي وَرَاءَ الإِمَامِ بِمِنًى أَرْبَعًا فَإِذَا صَلَّى لِنَفْسِهِ صَلَّى رَكْعَتَيْنِ ‏.‏
Translation

Yahya related to me from Malik from Nafi that Abdullah ibn Umarused to pray four rakas behind the imam at Mina, and when he prayed byhimself he would pray two rakas.