Hazrat, during Tarawih salah, I had a remnant of food stuck in my morsel tooth. I only realised this whilst I was in the state of qiyam, I picked it with my tongue, and swallowed it. I am uncertain if it was less than the size of a chickpea.
Was the salah valid?
الجواب وبالله التوفيق
The salahwill become invalidated and should be repeated, if the size of the food particle was equal to the size of chickpea.
(واکل ما بین اسنانہ وھو قدر الحِمَّصَۃَ (نور الایضاح باب ما یفسد الصلوۃ
واللہ اعلم بالصواب
This answer was collected from Shariahboard.org. It was established under the supervision of the eminent faqih of our era, Hazrat Shah Mufti Mohammed Navalur Rahman damat barakatuhum.