3. Ali ibn Ibrahim has narrated from his father from Ibn Abi ‘Umayr from Hammad from al-Halabiy who has said the following: “Once abu ‘Abd Allah , was asked about ’Ttikaf. He (the Imam) said, ‘Without Masjid ’Ttikaf is not valid, only in Masjid like Masjid al-Haram, Masjid of the Messenger of Allah, Masjid al-Kufah or Masjid al-Jami‘ and you must fast in the time you are in the state of ’Ttikaf.’”