From six incidents did R. Akiba become rich: From Kalba Shebu'a  From a ship's ram. For every ship is provided with the figurehead of an animal. Once this [a wooden ram] was forgotten on the sea shore, and R. Akiba found it.  From a hollowed out trunk. For he once gave four it to sailors, and told them to bring him something [that he needed]. But they found only a hollow log on the sea shore, which they brought to him, saying, 'Sit on this and wait'.  It was found to be full of denarii. For it once happened that a ship sunk and all the treasures thereof were placed in that log, and it was found at that time