Yahyabin Abu Ishaq narrated that Anas said:
"We went out with theMessenger of Allah (ﷺ) from Al-Madinah to Makkah, during which timewe shortened our prayer to two Rak'ah, until we came back." Iasked:"How long did he stay in Makkah?" He said: "Ten (days)."
English reference: Vol. 1, Book 5, Hadith 1077
Arabic reference: Book 5, Hadith 1130