…The Prophet, peace and blessings upon him, said, Tie her and trust in God.
-Hadith 2517 from the Sunna of al-Tirmidhī (824-892)
The Arabic verb here for Tie is ‘Aqala, To Hobble a Camel. Lane gives an alternative meaning for ’Aqala as, To Be in One’s Good Senses, and a secondary meaning as, To Comb [One’s Hair], but KhairAllah when halting the herd to camp and shouting, I’qal!, gave no reason to think he meant anything other than Hobble!, despite our slightly crazed minds after a night ride into the hard north wind or the sandy muss its blow had made of our heads.