Caution: Translations of Quran and Ḥadīth may lead to possible misapplications and misinterpretations. This site is intended for students of sacred knowledge that are proficient in comprehending classical Arabic and have a strong foundation in Islamic sciences. Also note that religious injunctions rely on several aspects beyond what one may glean through reading individual aḥādīth.
bayhaqi:238Abū al-Ḥasan ʿAlī b. Aḥmad b. ʿAbdān > Aḥmad b. ʿUbayd al-Ṣaffār > Ibrāhīm b. Aḥmad al-Wāsiṭī > Hudbah b. Khālid > Ḥammād b. Salamah > ʿAmmār b. Abū ʿAmmār > Abū Hurayrah

[Machine] The Prophet ﷺ commanded the practice of gargling and sniffing water into the nose. He said it on another occasion as well. This narration was not mentioned by Abu Hurairah. The scholar said in this hadith, I think it is a fabricated addition, reported by someone once and then connected to it in another narration. Dawud ibn al-Muhabbir narrated it from Hammad regarding its connection, and others reported it as a connected hadith. This is also mentioned to me by Abu Bakr al-Faqih from Abu Al-Hasan al-Daraqutni. The scholar disagreed with them, and Ibrahim ibn Sulaiman al-Khallal, a teacher of Ya'qub ibn Sufyan, said from Hammad from Ammar from Ibn Abbas, and both of them are not reliable narrators.  

البيهقي:٢٣٨أَخْبَرَنَا أَبُو الْحَسَنِ عَلِيُّ بْنُ أَحْمَدَ بْنِ عَبْدَانَ أنا أَحْمَدُ بْنُ عُبَيْدٍ الصَّفَّارُ ثنا إِبْرَاهِيمُ بْنُ أَحْمَدَ الْوَاسِطِيُّ ثنا هُدْبَةُ بْنُ خَالِدٍ ثنا حَمَّادُ بْنُ سَلَمَةَ عَنْ عَمَّارِ بْنِ أَبِي عَمَّارٍ عَنْ أَبِي هُرَيْرَةَ

أَنَّ رَسُولَ اللهِ ﷺ أَمَرَ بِالْمَضْمَضَةِ وَالِاسْتِنْشَاقِ قَالَ وَقَالَ مَرَّةً أُخْرَى مُرْسَلًا لَمْ يَقُلْ عَنْ أَبِي هُرَيْرَةَ قَالَ الشَّيْخُ كَذَا فِي هَذَا الْحَدِيثِ أَظُنُّهُ هُدْبَةَ أَرْسَلَهُ مَرَّةً وَوَصَلَهُ أُخْرَى وَتَابَعَهُ دَاوُدُ بْنُ الْمُحَبَّرِ عَنْ حَمَّادٍ فِي وَصْلِهِ وَغَيْرُهُمَا يَرْوِيهِ مُرْسَلًا وَكَذَلِكَ ذَكَرَهُ لِي أَبُو بَكْرٍ الْفَقِيهُ عَنْ أَبِي الْحَسَنِ الدَّارَقُطْنِيِّ قَالَ الشَّيْخُ وَخَالَفَهُمَا إِبْرَاهِيمُ بْنُ سُلَيْمَانَ الْخَلَّالُ شَيْخٌ لِيَعْقُوبَ بْنِ سُفْيَانَ فَقَالَ عَنْ حَمَّادٍ عَنْ عَمَّارٍ عَنِ ابْنِ عَبَّاسٍ وَكِلَاهُمَا غَيْرُ مَحْفُوظٍ