Volume 002, Book 020, Hadith Number 186Narrated By Ibn Abbas :
The Prophet once stayed for nineteen days and prayed shortened prayers. So when we travel led (and stayed) for nineteen days, we used to shorten the prayer but if we travelled (and stayed) for a longer period we used to offer the full prayer.
Volume 002, Book 020, Hadith Number 187Narrated By Yahya bin Ishaq :
I heard Anas saying, "We travelled with the Prophet from Medina to Mecca and offered two Rakat (for every prayer) till we returned to Medina." I said, "Did you stay for a while in Mecca?" He replied, "We stayed in Mecca for ten days."
Volume 002, Book 020, Hadith Number 188Narrated By 'Abdullah bin 'Umar :
I offered the prayer with the Prophet, Abu Bakr and 'Umar at Mina and it was of two Rakat. 'Uthman in the early days of his caliphate did the same, but later on he started praying the full prayer.
Volume 002, Book 020, Hadith Number 189Narrated By Haritha bin Wahab :
The Prophet I led us in the prayer at Mina during the peace period by offering two Rakat.
Volume 002, Book 020, Hadith Number 190Narrated By 'Abdur Rahman bin Yazid :
We offered a four Rakat prayer at Mina behind Ibn 'Affan. 'Abdullah bin Masud was informed about it. He said sadly, "Truly to Allah we belong and truly to Him we shall return." And added, "I prayed two Rakat with Allah's Apostle at Mina and similarly with Abu Bakr and with 'Umar (during their caliphates)." He further said, "May I be lucky enough to have two of the four Rakat accepted (by Allah)."
Volume 002, Book 020, Hadith Number 191Narrated By Ibn Abbas :
The Prophet and his companions reached Mecca in the morning of the 4th Dhul-Hijja reciting Talbiya (O Allah! We are obedient to your orders, we respond 4 to your call)... intending to perform Hajj. The Prophet ordered his companions to assume the Ihram for Umra instead of Hajj, excepting those who had Hadi (sacrifice) with them.