From
The Didache, chapter 1.
1 There are two paths, one of life and one of death, and the difference is great between the two paths.
2 Now the path of life is this -- first, thou shalt love the God who made thee, thy neighbour as thyself, and all things that thou wouldest not should be done unto thee, do not thou unto another.
3 And the doctrine of these maxims is as follows. Bless them that curse you, and pray for your enemies. Fast on behalf of those that persecute you; for what thank is there if ye love them that love you? Do not even the Gentiles do the same? But do ye love them that hate you, and ye will not have an enemy.
4 Abstain from fleshly and worldly lusts. If any one give thee a blow on thy right cheek, turn unto him the other also, and thou shalt be perfect; if any one compel thee to go a mile, go with him two; if a man take away thy cloak, give him thy coat also; if a man take from thee what is thine, ask not for it again, for neither art thou able to do so.
5 Give to every one that asketh of thee, and ask not again; for the Father wishes that from his own gifts there should be given to all. Blessed is he who giveth according to the commandment, for he is free from guilt; but woe unto him that receiveth. For if a man receive being in need, he shall be free from guilt; but he who receiveth when not in need, shall pay a penalty as to why he received and for what purpose; and when he is in tribulation he shall be examined concerning the things that he has done, and shall not depart thence until he has paid the last farthing.
6 For of a truth it has been said on these matters, let thy almsgiving abide in thy hands until thou knowest to whom thou hast given.