I‘tikaf is not Valid without Fasting
Al-Kāfi|Volume 4|Book 2|Chapter 77
1ـ عِدَّةٌ مِنْ أَصْحَابِنَا عَنْ سَهْلِ بْنِ زِيَادٍ عَنْ أَحْمَدَ بْنِ مُحَمَّدٍ عَنْ دَاوُدَ بْنِ الْحُصَيْنِ عَنْ أَبِي الْعَبَّاسِ عَنْ أَبِي عَبْدِ الله (عَلَيْهِ السَّلاَم) قَالَ لا اعْتِكَافَ إِلاَّ بِصَوْمٍ.
1. A number of our people have narrated from Sahl ibn Ziyad from Ahmad ibn Muhammad from Dawud ibn al-Huseen from abu al-‘Abbas who has said the following: “Abu ‘Abd Allah عليه السلام, has said, ‘Without fast ’I‘tikaf is not valid.’”
- Mirʾāt al-ʿUqūl fī Sharḥ Akhbār Āl al-Rasūl (6/427)
- Ṣaḥīḥ al-Kāfī