(79) باب أَيْنَ يَكُونُ الاِعْتِكَافُ
Abu Hurairah said:
The Prophet (ﷺ) used to observe I'tikaf during ten days of Ramadan every year. But when the year in which he died, he observed I'tikaf for twenty days. (DE)
Reference (DE): Sunan Abi Dawud 2466 (DE)
In-book reference (DE): Book 14, Hadith 154 (DE)
English translation (DE): Book 13, Hadith 2460 (DE)