Hadith 3087
Narrated Jabir bin `Abdullah: I was on a journey in the company of the Prophet and when we reached Medina, he said to me, "Enter the Mosque and offer two rak`at."
Hadith 3088
Narrated Ka`b: Whenever the Prophet returned from a journey in the forenoon, he would enter the Mosque and offer two rak`at before sitting.