take

2 Samuel 20:6 And David said to Abishai, Now shall Sheba the son of Bichri do us more harm than did Absalom: take you your lord's servants...

and cause Maimonides informs us, that it was a capital offence for any one to ride on the king's mule, to sit on his throne, or to handle his sceptre, without permission; and as David ordered Solomon to ride on his own mule, etc, it was ample evidence that he had appointed him his successor.

to ride

1 Kings 1:5,33,44 Then Adonijah the son of Haggith exalted himself, saying, I will be king: and he prepared him chariots and horsemen...

Genesis 41:43 And he made him to ride in the second chariot which he had; and they cried before him, Bow the knee...

Esther 6:6-11 So Haman came in. And the king said to him, What shall be done to the man whom the king delights to honor...

mine own mule [heb] the mule which {belongeth} to me

Leviticus 19:19 You shall keep my statutes. You shall not let your cattle engender with a diverse kind: you shall not sow your field with mingled seed...

Gihon

1 Kings 1:38,45 So Zadok the priest, and Nathan the prophet, and Benaiah the son of Jehoiada, and the Cherethites, and the Pelethites, went down...

2 Chronicles 32:30 This same Hezekiah also stopped the upper watercourse of Gihon, and brought it straight down to the west side of the city of David...