helping hand; help; support; aid
Idiomatic expression for offering or receiving help, often in a figurative sense of extending a hand to someone in need.
困っているとき、友人が救いの手を差し伸べてくれた。
When I was in trouble, a friend extended a helping hand.
政府の救いの手が被災地に届
The government's aid reached the disaster area.
Compound of 救い (rescue, salvation) + の (possessive particle) + 手 (hand). The expression figuratively refers to a hand that rescues or helps.