《明史·列传·卷一百六十一》
十五年四月，自成又围攻开封，朝廷于是把当初推荐过良玉的原尚书侯恂从狱中放出来，起用为督师，又从国库中拿出十五万两银子来犒劳良玉的将士，以激励他奋勇作战。
十五年四月，自成复围开封，乃释故尚书初荐良玉者侯恂于狱，起为督师，发帑金十五万犒良玉营将士，激劝之。
In April of the 15th year, Zicheng besieged Kaifeng again, so the court released Hou Xun, the former minister of the Ministry of War who had recommended Liangyu, from prison, appointed him as the chief superintendent, and took out 150,000 taels of silver from the national treasury to reward Liangyu's soldiers to encourage him to fight bravely.