The Eight Books of Thucydides' History, translated by R. Crawley.
About the same time Phaeax, son of Erasistratus, set sail with two colleagues as ambassador from Athens to Italy and Sicily. The Leontines, upon the departure of the Athenians from Sicily after the pacification, had placed a number of new citizens upon the roll, and the commons had a design for redividing the land; but the upper classes, aware of their intention, called in the Syracusans and expelled the commons. These last were scattered in various directions; but the upper classes came to an agreement with the Syracusans, abandoned and laid waste their city, and went and lived at Syracuse, where they were made citizens. Afterwards some of them were dissatisfied, and leaving Syracuse occupied Phocaeae, a quarter of the town of Leontini, and Bricinniae, a strong place in the Leontine country, and being there joined by most of the exiled commons carried on war from the fortifications. The Athenians hearing this, sent Phaeax to see if they could not by some means so convince their allies there and the rest of the Sicilians of the ambitious designs of Syracuse as to induce them to form a general coalition against her, and thus save the commons of Leontini. Arrived in Sicily, Phaeax succeeded at Camarina and Agrigentum, but meeting with a repulse at Gela did not go on to the rest, as he saw that he should not succeed with them, but returned through the country of the Sicels to Catana, and after visiting Bricinniae as he passed, and encouraging its inhabitants, sailed back to Athens.
During his voyage along the coast to and from Sicily, he treated with some cities in Italy on the subject of friendship with Athens, and also fell in with some Locrian settlers exiled from Messina, who had been sent thither when the Locrians were called in by one of the factions that divided Messina after the pacification of Sicily, and Messina came for a time into the hands of the Locrians. These being met by Phaeax on their return home received no injury at his hands, as the Locrians had agreed with him for a treaty with Athens. They were the only people of the allies who, when the reconciliation between the Sicilians took place, had not made peace with her; nor indeed would they have done so now, if they had not been pressed by a war with the Hipponians and Medmaeans who lived on their border, and were colonists of theirs. Phaeax meanwhile proceeded on his voyage, and at length arrived at Athens.
Reference address : https://www.ellopos.net/elpenor/greek-texts/ancient-greece/thucydides/history-5.asp?pg=2