Mishkat al-Masabih
Mishkat al-Masabih 1582
وَعَنْ ثَوْبَانَ أَنَّ رَسُولَ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ قَالَ: " إِذَا أَصَابَ أَحَدَكُمُ الْحُمَّى فَإِنَّ الْحمى قِطْعَة من النَّار فليطفها عَنْهُ بِالْمَاءِ فَلْيَسْتَنْقِعْ فِي نَهْرٍ جَارٍ وَلْيَسْتَقْبِلْ جِرْيَتَهُ فَيَقُولُ: بِسْمِ اللَّهِ اللَّهُمَّ اشْفِ عَبْدَكَ وَصدق رَسُولك بعد صَلَاة الصُّبْح وَقبل طُلُوعِ الشَّمْسِ وَلْيَنْغَمِسْ فِيهِ ثَلَاثَ غَمْسَاتٍ ثَلَاثَةَ أَيَّامٍ فَإِنْ لَمْ يَبْرَأْ فِي ثَلَاثٍ فَخَمْسٍ فَإِنْ لَمْ يَبْرَأْ فِي خَمْسٍ فَسَبْعٍ فَإِنْ لَمْ يَبْرَأْ فِي سَبْعٍ فَتِسْعٍ فَإِنَّهَا لَا تَكَادَ تُجَاوِزُ تِسْعًا بِإِذْنِ اللَّهِ عَزَّ وَجَلَّ ". رَوَاهُ التِّرْمِذِيُّ وَقَالَ: هَذَا حَدِيثٌ غَرِيبٌ
Thawban reported that the Messenger of God said: If fever strikes one of you, fever is a piece of the Fire, so let him cool it with water. Let him immerse himself in a flowing river, facing its current, and say after the dawn prayer and before sunrise: In the name of God. O God, heal Your servant and affirm the truth of Your Messenger. Let him immerse himself in it three times for three days. If he is not cured within three days, then five; if he is not cured within five, then seven; if he is not cured within seven, then nine. By permission of God, Mighty and Majestic, it scarcely lasts beyond nine days.
Al-Tirmidhi transmitted it and said: This is a gharib hadith.
Translation notes
وَلْيَنْغَمِسْ فِيهِ ثَلَاثَ غَمْسَاتٍ ثَلَاثَةَ أَيَّامٍ
The Arabic says three immersions and three days, while the English witness makes the frequency three times a day.
Does the wording specify three immersions over three days, or three immersions each day?