Whoever did not offer the Salat after the compulsory (congregational) Salat (prayers
باب مَنْ لَمْ يَتَطَوَّعْ بَعْدَ الْمَكْتُوبَةِ
Sahih al-Bukhari, Book of Prayer at Night (Tahajjud)(view book)
Sahih al-Bukhari 1174
Narrated 'Amr:
I heard Abu Ash-sha'tha' Jabir saying, "I heard Ibn Abbas saying, 'I offered with Allah's Apostle eight Rakat (of Zuhr and 'Asr prayers) together and seven Rakat (the Maghrib and the 'Isha' prayers) together.' " I said, "O Abu Ash-shatha! I think he must have prayed the Zuhr late and the 'Asr early;
the 'Isha early and the Maghrib late." Abu Ash-sha'tha' said, "I also think so." (See Hadith No. 518 Vol. 1).
حَدَّثَنَا عَلِيُّ بْنُ عَبْدِ اللَّهِ، قَالَ حَدَّثَنَا سُفْيَانُ، عَنْ عَمْرٍو، قَالَ سَمِعْتُ أَبَا الشَّعْثَاءِ، جَابِرًا قَالَ سَمِعْتُ ابْنَ عَبَّاسٍ ـ رضى الله عنه ـ قَالَ صَلَّيْتُ مَعَ رَسُولِ اللَّهِ ﷺ ثَمَانِيًا جَمِيعًا وَسَبْعًا جَمِيعًا. قُلْتُ يَا أَبَا الشَّعْثَاءِ أَظُنُّهُ أَخَّرَ الظُّهْرَ وَعَجَّلَ الْعَصْرَ وَعَجَّلَ الْعِشَاءَ وَأَخَّرَ الْمَغْرِبَ. قَالَ وَأَنَا أَظُنُّهُ.