1 Kings 1:33

The king also said unto them, they were to act as his representatives in the matter which he had in mind, Take with you the servants of your lord, the king's own body-guard, and cause Solomon, my son, to ride upon mine own mule, this being an actual declaration that the latter was king, and bring him down to Gihon, a place west of Jerusalem, with a spring of water which fed two reservoirs,