(84) باب الصَّلاَةِ بِمِنًى
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).
Reference: Sahih al-Bukhari 1657
In-book reference: Book 25, Hadith 138
USC-MSA web (English) reference(deprecated numbering scheme): Vol. 2, Book 26, Hadith 719