رَوَى اَلْحَلَبِيُّ عَنْ أَبِي عَبْدِ اَللَّهِ عَلَيْهِ اَلسَّلاَمُ أَنَّهُ قَالَ: «لاَ اِعْتِكَافَ إِلاَّ بِصَوْمٍ فِي مَسْجِدِ اَلْجَامِعِ ».
It is narrated by Al-Halabi from Abu Abdullah (a.s) that he said: "There is no valid i'tikaf (spiritual retreat) except with fasting and in a congregational mosque."