مُوَطَّأُ مَالِكٍ
Muwatta Malik 699
I'tikaf in Ramadan
وَحَدَّثَنِي زِيَادٌ، عَنْ مَالِكٍ، عَنِ ابْنِ شِهَابٍ، . أَنَّ رَسُولَ اللَّهِ صلى الله عليه وسلم كَانَ يَذْهَبُ لِحَاجَةِ الإِنْسَانِ فِي الْبُيُوتِ . قَالَ مَالِكٌ لاَ يَخْرُجُ الْمُعْتَكِفُ مَعَ جَنَازَةِ أَبَوَيْهِ وَلاَ مَعَ غَيْرِهَا .
Ziyad related to me from Malik from Ibn Shihab that the Messenger of Allah, (ﷺ), used to go to relieve himself in houses. Malik said, "Someone doing itikaf should not leave for his parents' funeral or for anything else."
Arabic/English book reference: Book 19, Hadith 9