Book Name:Welcoming Ramadan
اَلۡـحَـمۡـدُ لِـلّٰـہِ رَبِّ الۡـعٰـلَـمِیۡنَ وَ الـصَّـلٰـوۃُ وَ الـسَّـلَامُ عَـلٰی خَاتَمِ النَّبِیّٖن
اَمَّـا بَــعۡـدُ فَـاَعُـوۡذُ بِـا لـلّٰـہِ مِـنَ الـشَّـیۡـطٰنِ الـرَّجِیۡمِؕ بِـسۡمِ الـلّٰـہِ الـرَّحۡـمٰنِ الـرَّحِـیۡمِؕ
وَعَلٰى اٰلِكَ وَاَصۡحٰبِكَ يَا حَبِيۡبَ اللّٰه اَلصَّلٰوةُ وَالسَّلَامُ عَلَيۡكَ يَا رَسُوۡلَ اللّٰه
وَعَلٰى اٰلِكَ وَاَصۡحٰبِكَ يَا نُوۡرَ اللّٰه اَلصَّلٰوةُ وَالسَّلَامُ عَلَيۡكَ يَا نَبِيَّ اللّٰه
نَوَيۡتُ سُنَّتَ الۡاِعۡتِكَافِ
I make intention of Sunnah iꜤtikāf
As mentioned in Fatāwā Shāmī:
If somebody wishes to eat, drink, or sleep in a masjid, he should make an intention of iꜤtikāf and engage in the dhikr of Allah for some time. Then, he may proceed as he wishes (i.e. now if he wants to eat, drink or sleep, he can do so).