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.
Qurʾān Bukhārī Muslim Nasāʾī Abū Dāwūd Tirmidhī Ibn Mājah Mālik Aḥmad Dārimī Ḥākim Ibn Ḥibbān Ṭabarānī Nasāʾī's Kubrá Bayhaqī al-Luʾluʾ wa-al-Marjān Ibn Rajab's Fifty Riyāḍ al-Ṣāliḥīn Aḥmad's Zuhd Suyūṭī
bayhaqi:5650 – Abū ʿAbdullāh al-Ḥāfiẓ > Abū Bakr Aḥmad b. Isḥāq al-Faqīh > Ismāʿīl b. Isḥāq > Sulaymān b. Ḥarb > Shuʿbah > ʿAmr b. Murrah > Ḥumayd al-Fazārī > Āmraʾah Minhum > Jāʾanā Ibn Masʿūd Yawm al-Jumuʿah > Kayf Tuṣallīn Thum

[Machine] If I pray with the imam, then I follow his prayer, and if I pray alone, then you pray four (rak'ahs).  

البيهقي:٥٦٥٠ – وَأَخْبَرَنَا أَبُو عَبْدِ اللهِ الْحَافِظُ أنبأ أَبُو بَكْرٍ أَحْمَدُ بْنُ إِسْحَاقَ الْفَقِيهُ أنبأ إِسْمَاعِيلُ بْنُ إِسْحَاقَ ثنا سُلَيْمَانُ بْنُ حَرْبٍ ثنا شُعْبَةُ عَنْ عَمْرِو بْنِ مُرَّةَ قَالَ سَمِعْتُ حُمَيْدًا الْفَزَارِيَّ يُحَدِّثُ عَنِ امْرَأَةٍ مِنْهُمْ قَالَتْ جَاءَنَا ابْنُ مَسْعُودٍ يَوْمَ الْجُمُعَةِ فَقَالَ كَيْفَ تُصَلِّينَ؟ ثُمَّ قَالَ

إِذَا صَلَّيْتُنَّ مَعَ الْإِمَامِ فَبِصَلَاتِهِ وَإِذَا صَلَّيْتُنَّ وَحْدَكُنَّ فَتُصَلِّينَ أَرْبَعًا