On another occasion, in the rout of the Athenians which followed the battle of Delium, Alcibiades, on horseback, saw Socrates retreating on foot with a small company, and would not pass him by, but rode by his side and defended him, though the enemy were pressing them hard and slaying many.
Edition :
Plutarch Lives IV: Alcibiades and Coriolanus, Lysander and Sulla, Ed. Jeffrey Henderson, trans. Bernadotte Perrin (The Loeb Classical Library 80), Harvard University Press: Cambridge/MA - London 2000 (first ed. 1916).