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.
muslim:710aAḥmad b. Ḥanbal > Muḥammad b. Jaʿfar > Shuʿbah > And Rqāʾ > ʿAmr b. Dīnār > ʿAṭāʾ b. Yasār > Abū Hurayrah

When the prayer commences then there is no prayer (valid), but the obligatory prayer. This hadith has been narrated by Warqa' with the same chain of transmitters.  

مسلم:٧١٠aوَحَدَّثَنِي أَحْمَدُ بْنُ حَنْبَلٍ حَدَّثَنَا مُحَمَّدُ بْنُ جَعْفَرٍ حَدَّثَنَا شُعْبَةُ عَنْ وَرْقَاءَ عَنْ عَمْرِو بْنِ دِينَارٍ عَنْ عَطَاءِ بْنِ يَسَارٍ عَنْ أَبِي هُرَيْرَةَ

عَنِ النَّبِيِّ ﷺ قَالَ إِذَا أُقِيمَتِ الصَّلاَةُ فَلاَ صَلاَةَ إِلاَّ الْمَكْتُوبَةُ وَحَدَّثَنِيهِ مُحَمَّدُ بْنُ حَاتِمٍ وَابْنُ رَافِعٍ قَالاَ حَدَّثَنَا شَبَابَةُ حَدَّثَنِي وَرْقَاءُ بِهَذَا الإِسْنَادِ