Kautilya's Arthashastra 7.9.2

7.9.2

mitrahiraṇye hi bhūmilābhād bhavataḥ, mitraṃ hiraṇyalābhāt //

OF the three gains, the acquisition of a friend, of gold, and of territory, accruing from the march of combined powers, that which is mentioned later is better than the one previously mentioned; for friends and gold can be acquired by means of territory; of the two gains, that of a friend and of gold, each can be a means to acquire the other.