Sunan an-Nasa'i 2875
سنن النسائي#2875SahihIt was narrated that Ibn Abbas said:"The Messenger of Allah said on the day of the conquest of Makkah: 'Allah, the Might and Sublime, has made this land sacred, and it was not permissible to fight therein for anyone before me. It was permitted for me for a few hours of a day, and it is sacred by the decree of Allah, the Might and Sublime
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Abu GhuddahSahih
Al-AlbaniSahih
Zubair Ali ZaiHasan
In-book reference: 24:258