[Machine] If the water is equal to forty (liters) or less, it does not carry impurity, and it is opposed by no one. Al-Faraa said: forty Ghabs (a unit of measurement) of water, and some of them said: forty buckets. Abu Bakr ibn al-Harith narrated it to me from Abu Hassan al-Daraqutni al-Hafidh. The Sheikh narrated it, and Muhammad ibn Yahya al-Zuhli narrated it from Amr ibn Khalid, from Ibn Lahita, from Yazid ibn Abi Habib, from Amr ibn Hurayth, from Abu Hurayrah who said: Forty buckets of water do not cause impurity, even if a junub (ritually impure) person performs ghusl (ritual purification) in it and another person follows him. This is more reliable and Ibn Lahita is not a strong authority on this matter. And the saying of anyone who agrees with the saying of the companions is more reliable than the saying of the Messenger of Allah ﷺ in this regard. And with Allah is the ability to succeed.  

إِذَا كَانَ الْمَاءُ قَدْرَ أَرْبَعِينَ قُلَّةٍ لَمْ يَحْمِلْ خَبَثًا وَخَالَفَهُ غَيْرُ وَاحِدٍ فَرَوَوْهُ عَنْ أَبِي هُرَيْرَةَ فَقَالُوا أَرْبَعِينَ غَرْبًا وَمِنْهُمْ مِنْ قَالَ أَرْبَعِينَ دَلْوًا قَالَهُ لِي أَبُو بَكْرِ بْنُ الْحَارِثِ عَنْ أَبِي الْحَسَنِ الدَّارَقُطْنِيِّ الْحَافِظِ قَالَ الشَّيْخُ وَرَوَاهُ مُحَمَّدُ بْنُ يَحْيَى الذُّهْلِيُّ عَنْ عَمْرِو بْنِ خَالِدٍ عَنِ ابْنِ لَهِيعَةَ عَنْ يَزِيدَ بْنِ أَبِي حَبِيبٍ عَنْ عَمْرِو بْنِ حُرَيْثٍ عَنْ أَبِي هُرَيْرَةَ قَالَ أَرْبَعُونَ دَلْوًا مِنْ مَاءٍ لَا يُنَجِّسُهُ وَإِنِ اغْتَسَلَ فِيهِ الْجُنُبُ وَاتَّبَعَهُ آخَرُ وَهَذَا أَوْلَى وَابْنُ لَهِيعَةَ غَيْرُ مُحْتَجٍّ بِهِ وَقَوْلُ مِنْ يُوَافِقُ قَوْلُهُ مِنَ الصَّحَابَةِ قَوْلَ رَسُولِ اللهِ ﷺ فِي الْقُلَّتَيْنِ أَوْلَى أَنْ يُتَّبَعَ وَبِاللهِ التَّوْفِيقُ