Sirach 27:19

19 As one that letteth a bird go out of his hand, so hast thou let thy neighbour go, and shalt not get him again

Sirach 27:19 In-Context

17 Love thy friend, and be faithful unto him: but if thou betrayest his secrets, follow no more after him.
18 For as a man hath destroyed his enemy; so hast thou lost the love of thy neighbour.
19 As one that letteth a bird go out of his hand, so hast thou let thy neighbour go, and shalt not get him again
20 Follow after him no more, for he is too far off; he is as a roe escaped out of the snare.
21 As for a wound, it may be bound up; and after reviling there may be reconcilement: but he that betrayeth secrets is without hope.

The Brenton translation of the Septuagint is in the public domain.