Flavius Josephus, The Wars of the Jews
William Whiston, A.M., Ed.

[123] Now all the soldiery marched out beforehand by companies, and in their several ranks, under their several commanders, in the night time, and were about the gates, not of the upper palaces, but those near the temple of Isis; for there it was that the emperors had rested the foregoing night. And as soon as ever it was day, Vespasian and Titus came out crowned with laurel, and clothed in those ancient purple habits which were proper to their family, and then went as far as Octavian's Walks; for there it was that the senate, and the principal rulers, and those that had been recorded as of the equestrian order, waited for them. Now a tribunal had been erected before the cloisters, and ivory chairs had been set upon it, when they came and sat down upon them. Whereupon the soldiery made an acclamation of joy to them immediately, and all gave them attestations of their valor; while they were themselves without their arms, and only in their silken garments, and crowned with laurel: then Vespasian accepted of these shouts of theirs; but while they were still disposed to go on in such acclamations, he gave them a signal of silence. And when every body entirely held their peace, he stood up, and covering the greatest part of his head with his cloak, he put up the accustomed solemn prayers; the like prayers did Titus put up also; after which prayers Vespasian made a short speech to all the people, and then sent away the soldiers to a dinner prepared for them by the emperors. Then did he retire to that gate which was called the Gate of the Pomp, because pompous shows do always go through that gate; there it was that they tasted some food, and when they had put on their triumphal garments, and had offered sacrifices to the gods that were placed at the gate, they sent the triumph forward, and marched through the theatres, that they might be the more easily seen by the multitudes.