مِشْكَاةُ الْمَصَابِيحِ
Mishkat al-Masabih 2009
Fasting
Keeping the Fast free from Imperfection - Section 2
وَعَنْ عَامِرِ بْنِ رَبِيعَةَ قَالَ: رَأَيْتُ النَّبِيَّ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ مَا لَا أُحْصِي يَتَسَوَّكُ وَهُوَ صَائِمٌ ". رَوَاهُ التِّرْمِذِيُّ وَأَبُو دَاوُدَ
‘Amir b. Rabi'a said he had seen the Prophet (ﷺ) more often than he could count using a toothstick while he was fasting. Tirmidhi and Abu Dawud transmitted it.
Mishkat al-Masabih, 2009ضَعِيف (الألباني)