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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
ahmad:20082 – Muḥammad b. Jaʿfar And Rawḥ > Saʿīd > Qatādah > al-Ḥasan > Samurah b. Jundub

[Machine] The Messenger of Allah ﷺ said, "It is Al-Asr (the afternoon prayer)." Ibn Ja'far said, when asked about the Salah Al-Wustha (the middle prayer).  

أحمد:٢٠٠٨٢ – حَدَّثَنَا مُحَمَّدُ بْنُ جَعْفَرٍ وَرَوْحٌ قَالَا حَدَّثَنَا سَعِيدٌ عَنْ قَتَادَةَ عَنِ الْحَسَنِ عَنْ سَمُرَةَ بْنِ جُنْدُبٍ

أَنَّ رَسُولَ اللهِ ﷺ قَالَ هِيَ الْعَصْرُ قَالَ ابْنُ جَعْفَرٍ سُئِلَ عَنْ صَلَاةِ الْوُسْطَى  

See similar narrations below:

Collected by Ṭabarānī
tabarani:6825 – [Chain 1] Muʿādh b. al-Muthanná > Musaddad > Yazīd b. Zurayʿ [Chain 2] Mūsá b. Hārūn > Abū Ghassān al-Mismaʿī > Khālid b. al-Ḥārith > Saʿīd b. Abū ʿArūbah > Qatādah > al-Ḥasan > Samurah

We thought that it was Fajr, but the Messenger of Allah ﷺ said: ʿIt is Asr prayer” - meaning the middle prayer. (Using translation from Aḥmad 990)   

الطبراني:٦٨٢٥ – حَدَّثَنَا مُعَاذُ بْنُ الْمُثَنَّى ثنا مُسَدَّدٌ ثنا يَزِيدُ بْنُ زُرَيْعٍ ح وَحَدَّثَنَا مُوسَى بْنُ هَارُونَ ثنا أَبُو غَسَّانَ الْمِسْمَعِيُّ ثنا خَالِدُ بْنُ الْحَارِثِ قَالَا ثنا سَعِيدُ بْنُ أَبِي عَرُوبَةَ عَنْ قَتَادَةَ عَنِ الْحَسَنِ عَنْ سَمُرَةَ

عَنْ رَسُولِ اللهِ ﷺ قَالَ «صَلَاةُ الْوُسْطَى صَلَاةُ الْعَصْرِ»