Hadith 4:768
Ali ibn Mushir narrated to us, from al-Shaybani, from Sa’id ibn Jubayr, who said: He may attend the Friday prayer, visit the sick, attend the funeral, go out for a necessity, and respond to the Imam. That is because ‘Amr ibn Hurayth sent for him while he was in I’tikaf, but he did not come to him, so he sent to him again...
حدثنا علي بن مسهر عن الشيباني عن سعيد بن جبير قال يشهد الجمعة ويعود المريض ويحضر الجنازة ويخرج إلى حاجة ويجيب الإمام وذلك أن عمرو بن حريث أرسل إليه وهو معتكف فلم يأته فأرسل إليه فالمه