The hatred of Mordecai cherished by Haman was due to more than the hereditary enmity between the descendants of Saul and Agag. (104) Not even Mordecai's public refusal to pay the homage due to Haman suffices to explain its virulence. Mordecai was aware of a certain incident in the past of Haman. If he had divulged it, the betrayal would have been most painful to the latter. This accounts for the intensity of his feeling. It once happened that a city in India rebelled against Ahasuerus. In great haste troops were dispatched thither under the command of Mordecai and Haman. It was estimated that the campaign would require three years, and all preparations were made accordingly. By the end of the first year Haman had squandered the provisions laid in to supply the part of the army commanded by him, for the whole term of the campaign. Greatly embarrassed, he requested Mordecai to give him aid. Mordecai, however, refused him succor; they both had been granted the same amount of provisions for an equal number of men. Haman then offered to borrow from Mordecai and pay him interest. This, too, Mordecai refused to do, and for two reasons. If Mordecai had supplied Haman's men with provisions, his own would have to suffer, and as for interest, the law prohibits it, saying "Unto thy brother thou shalt not lend upon usury," and Jacob and Esau, the respective ancestors of Mordecai and Haman, had been brothers. When starvation stared them in the face, the troops commanded by Haman threatened him with death unless he gave them their rations. Haman again resorted to Mordecai, and promised to pay him as much as ten per cent interest. The Jewish general continued to refuse the offer. But he professed himself willing to help him out of his embarrassment on one condition, that Haman sell himself to Mordecai as his slave. Driven into a corner, he acquiesced, and the contract was written upon Mordecai's knee-cap, because there was no paper to be found in the camp.