Nahj al-Balāgha

فَقَالَ الْحَارِثُ: فَإِنِّي أَعْتَزِلُ مَعَ سَعِيدِ بْنِ مَالِكٍ وَعَبْدِ اللَّهِ بْنِ عُمَرَ.

Then al-Ḥārith said: In that case, I shall withdraw along with Sa‘d ibn Mālik and ‘Abdullāh ibn ‘Umar;