Response: It is not for him to specify a particular day itself within which to regularly perform i’tikaaf, rather, he should take care to perform i’tikaaf in the last ten (days and nights) of Ramadhaan in accordance with (the guidance of) the Prophet (sal-Allaahu `alayhe wa sallam).
And with Allaah lies all success, and may Allaah send prayers and salutations upon our Prophet Muhammad (sal-Allaahu `alayhe wa sallam) and his family and his companions.
The Permanent Committee for Islaamic Research and Verdicts, comprising –
Head: Shaykh ‘Abdul ‘Azeez ibn Abdullaah ibn Baaz;
Deputy Head: Shaykh ‘Abdur-Razzaaq ‘Afeefee;
Member: Shaykh ‘Abdullaah Ibn Ghudayyaan;
Member: Shaykh ‘Abdullaah Ibn Qu’ood
Fataawa Ramadhaan – Volume 1, Page 893, Fatwa No.880
Fataawa al-Lajnah ad-Daa.imah lil-Buhooth al-‘Ilmiyyah wal-Iftaa. – Fatwa No.8701
Published: 14 December 2001