Full Sharh — Sahih Muslim 1939
وَحَدَّثَنَا شَيْبَانُ بْنُ فَرُّوخَ، حَدَّثَنَا عَبْدُ الْوَارِثِ، عَنْ عَبْدِ الْعَزِيزِ، - وَهُوَ ابْنُ صُهَيْبٍ - عَنْ أَنَسِ بْنِ مَالِكٍ، قَالَ كُنَّا بِالْمَدِينَةِ فَإِذَا أَذَّنَ الْمُؤَذِّنُ لِصَلاَةِ الْمَغْرِبِ ابْتَدَرُوا السَّوَارِيَ فَيَرْكَعُونَ رَكْعَتَيْنِ رَكْعَتَيْنِ حَتَّى إِنَّ الرَّجُلَ الْغَرِيبَ لَيَدْخُلُ الْمَسْجِدَ فَيَحْسِبُ أَنَّ الصَّلاَةَ قَدْ صُلِّيَتْ مِنْ كَثْرَةِ مَنْ يُصَلِّيهِمَا .
English Translation
Anas b. Malik reported:When we were in Medina, the moment the Mu'adhdhin made the call to the sunset prayer, the people hastened to the pillars of the mosque and prayed two rak'ahs with the result that any stranger coming into the mosque would think that the obligatory prayer had been observed owing to the number who were praying then
Source
Sahih Muslim(صحيح مسلم)
The Book of Prayer - Travellers
Hadith Number
1939