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 Messengerof Allah, may Allah bless him and grant him peace, used to go torelieve himself in houses. Malik said, "Someone doing itikafshould not leave for his parents' funeral or for anything else." Translation Not Available

Book Ref: Muwatta Imam Malik Book 19 Hadith 699
Web Ref:  Muwatta Imam Malik Book 19 Hadith 9