upon mules and # 17_EST_08_14 # [So] the posts that rode upon mules [and] camels went out, being hastened and pressed on by the king's commandment. And the decree was given at Shushan the palace. 
upon mules and # 23_ISA_66_20 # And they shall bring all your brethren [for] an offering unto the LORD out of all nations upon horses, and in chariots, and in litters, and upon mules, and upon swift beasts, to my holy mountain Jerusalem, saith the LORD, as the children of Israel bring an offering in a clean vessel into the house of the LORD.