Narrated `Abdullah bin `Umar: Allah's Apostle offered a two-rak`at prayer at Mina. Abu Bakr, `Umar and `Uthman, (during the early years of his caliphate) followed the same practice.
Hadith Referenceصحيح البخاري / كتاب الحج / 1655
Hadith Gradingمحدثین:أحاديث صحيح البخاريّ كلّها صحيحة
Narrated Haritha bin Wahab Al-Khuza`i: The Prophet led us in a two-rak`at prayer at Mina although our number was more than ever and we were in better security than ever.
Hadith Referenceصحيح البخاري / كتاب الحج / 1656
Hadith Gradingمحدثین:أحاديث صحيح البخاريّ كلّها صحيحة
Narrated `Abdullah bin Mas`ud: I offered (only a) two rak`at prayer with the Prophet (at Mina), and similarly with Abu Bakr and with `Umar, and then you d offered in opinions. Wish that I would be lucky enough to have two of the four rak`at accepted (by Allah).
Hadith Referenceصحيح البخاري / كتاب الحج / 1657
Hadith Gradingمحدثین:أحاديث صحيح البخاريّ كلّها صحيحة