Nahj al-Balāgha
Hadith 1788وَرُوِيَ فِي خَبَرٍ آخَرَ أَنَّهُ قَالَ: هَذَا مَا كُنْتُمْ تَتَنَافَسُونَ فِيهِ بِالْأَمْسِ!
In another tradition it is related that he said: This is what you used to dispute with each other about until yesterday!