Who said "Put yourself last and you end up first."?

Lao Tzu (6th century BC). Source: Tao Te Ching 7.

What is the original Chinese?

是以聖人後其身而身先. Translated from the original Chinese by Spartan Surfers.

Put yourself last and you end up first.

Lao Tzu, Tao Te Ching 7

The source

"Put yourself last and you end up first." Lao Tzu said it in Tao Te Ching 7. Translated from the original Chinese by Spartan Surfers.

"是以聖人後其身而身先"

Original Chinese, Tao Te Ching 7. Chinese: Wang Bi edition via zh.wikisource.

Who said it

Lao Tzu (6th century BC). Keeper of the archives at the Zhou court, by tradition the author of the Tao Te Ching: eighty-one short chapters on water, softness and knowing when to stop.

Questions

Who said "Put yourself last and you end up first."?: Lao Tzu (6th century BC). Source: Tao Te Ching 7.
What is the original Chinese?: 是以聖人後其身而身先. Translated from the original Chinese by Spartan Surfers.