It was narrated from ‘Abdullah bin ‘Umar that:The Messenger of Allah (ﷺ) used to spend the last ten days of Ramadan in I’tikaf. Nafi' said: " Abdullah bin 'Umar showed me the place where the Messenger of Allah (ﷺ) used to observe I'tikaf
Hadith No. 1773
Sunan Ibn Majah
Gradings:
Al-Albani:
Sahih
Muhammad Fouad Abd al-Baqi:
Sahih
Zubair Ali Zai:
Sahih - Bukhari And Muslim