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

[276] However, in this ill success of the Romans, their courage did not fail them, nor did the Jews want prudence to oppose them; for the Romans, although they saw their own men thrown down, and in a miserable condition, yet were they vehemently bent against those that poured the oil upon them; while every one reproached the man before him as a coward, and one that hindered him from exerting himself; and while the Jews made use of another stratagem to prevent their ascent, and poured boiling fenugreek upon the boards, in order to make them slip and fall down; by which means neither could those that were coming up, nor those that were going down, stand on their feet; but some of them fell backward upon the machines on which they ascended, and were trodden upon; many of them fell down upon the bank they had raised, and when they were fallen upon it were slain by the Jews; for when the Romans could not keep their feet, the Jews being freed from fighting hand to hand, had leisure to throw their darts at them. So the general called off those soldiers in the evening that had suffered so sorely, of whom the number of the slain was not a few, while that of the wounded was still greater; but of the people of Jotapata no more than six men were killed, although more than three hundred were carried off wounded. This fight happened on the twentieth day of the month Desius [Sivan].