ENOfficial
It was narrated that ‘Abdullah bin Mas’ud said: “The Messenger of Allah (ﷺ) said: ‘You may come across people who offer a prayer at the wrong time. If you meet them, then perform prayer in your houses at the time that you know, then pray with them and make that voluntary.”
Source: sunnah.com
Other translations
Arabic
حَدَّثَنَا مُحَمَّدُ بْنُ الصَّبَّاحِ، أَنْبَأَنَا أَبُو بَكْرِ بْنُ عَيَّاشٍ، عَنْ عَاصِمٍ، عَنْ زِرٍّ، عَنْ عَبْدِ اللَّهِ بْنِ مَسْعُودٍ، قَالَ قَالَ رَسُولُ اللَّهِ ـ صلى الله عليه وسلم ـ " لَعَلَّكُمْ سَتُدْرِكُونَ أَقْوَامًا يُصَلُّونَ الصَّلاَةَ لِغَيْرِ وَقْتِهَا. فَإِنْ أَدْرَكْتُمُوهُمْ فَصَلُّوا فِي بُيُوتِكُمْ لِلْوَقْتِ الَّذِي تَعْرِفُونَ. ثُمَّ صَلُّوا مَعَهُمْ وَاجْعَلُوهَا سُبْحَةً " .
sunnah.com