What is In Aequali Manu?

Legal Definition
In equal hand; held equally or indifferently between two parties. Where an instrument was deposited by the parties to it in the hands °f a third person, to keep on certain conditions, it was said to be held in aequali manu. Reg. Orig. 28
-- Black's Law Dictionary
Legal Definition
In equal hand, i. e., in the hands of an indifferent person.
-- Ballentine's Law Dictionary