It wasnarrated from Ibn 'Umar that:
When the Prophet (ﷺ) observedI'tikaf, his bedding would be spread for him, or his bed would beplaced there for him, behind the Pillar or Repentance. (TR)
English reference (TR): Vol. 1, Book 7, Hadith 1774 (TR)
Arabic reference (TR): Book 7, Hadith 1846 (TR)