Unapotukanwa ukiwa umefunga

إِنِّي صَائِمٌ، إِنِّي صَائِمٌ

Innī ṣā'im, innī ṣā'im.

I am fasting. I am fasting.

Al-Bukhari, cf. Al-Asqalani, Fathul-BAri 4/103, Muslim 2/806.