مِشْكَاةُ الْمَصَابِيحِ
Mishkat al-Masabih 376
Purification
The tooth-stick - Section 1
عَنْ أَبِي هُرَيْرَةَ رَضِيَ اللَّهُ عَنْهُ قَالَ: قَالَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ: «لَوْلَا أَنْ أَشُقَّ عَلَى أُمَّتِي لَأَمَرْتُهُمْ بِتَأْخِيرِ الْعشَاء وبالسواك عِنْد كل صَلَاة»
Abu Huraira reported God's messenger as saying, “Were it not that I might distress my people, I would order them to delay the evening prayer and use the tooth stick at every time of prayer.” (Bukhari and Muslim.)
Mishkat al-Masabih, 376مُتَّفَقٌ عَلَيْهِ (الألباني)