Sahih Muslim 705 g
'Abdullah b. Shaqiq reported:
Ibn 'Abbas one day addressed us in the afternoon (after the afternoon prayer) till the sun disappeared and the stars appeared, and the people began to say: Prayer, prayer. A person from Banu Tamim came there. He neither slackened nor turned away, but (continued crying): Prayer, prayer. Ibn 'Abbas said: May you be deprived of your mother, do you teach me Sunnah? And then he said: I saw the Messenger of Allah (ﷺ) combining the noon and afternoon prayers and the sunset and 'Isha' prayers. 'Abdullah b. Shaqiq said: Some doubt was created in my mind about it. So I came to Abu Huraira and asked him (about it) and he testified his assertion.
وَحَدَّثَنِي أَبُو الرَّبِيعِ الزَّهْرَانِيُّ، حَدَّثَنَا حَمَّادٌ، عَنِ الزُّبَيْرِ بْنِ الْخِرِّيتِ، عَنْ عَبْدِ اللَّهِ بْنِ شَقِيقٍ، قَالَ خَطَبَنَا ابْنُ عَبَّاسٍ يَوْمًا بَعْدَ الْعَصْرِ حَتَّى غَرَبَتِ الشَّمْسُ وَبَدَتِ النُّجُومُ وَجَعَلَ النَّاسُ يَقُولُونَ الصَّلاَةَ الصَّلاَةَ - قَالَ - فَجَاءَهُ رَجُلٌ مِنْ بَنِي تَمِيمٍ لاَ يَفْتُرُ وَلاَ يَنْثَنِي الصَّلاَةَ الصَّلاَةَ ‏.‏ فَقَالَ ابْنُ عَبَّاسٍ أَتُعَلِّمُنِي بِالسُّنَّةِ لاَ أُمَّ لَكَ ‏.‏ ثُمَّ قَالَ رَأَيْتُ رَسُولَ اللَّهِ صلى الله عليه وسلم جَمَعَ بَيْنَ الظُّهْرِ وَالْعَصْرِ وَالْمَغْرِبِ وَالْعِشَاءِ ‏.‏ قَالَ عَبْدُ اللَّهِ بْنُ شَقِيقٍ فَحَاكَ فِي صَدْرِي مِنْ ذَلِكَ شَىْءٌ فَأَتَيْتُ أَبَا هُرَيْرَةَ فَسَأَلْتُهُ فَصَدَّقَ مَقَالَتَهُ ‏.‏