Chofetz Chaim Daily 19 Av 10:11 If you yourself was the one that was hurt, it is asur to spread because intention isn’t l’toeles. 10:12 It’s a bigger sin to spread if he didn’t even hurt you, just didn’t do you a favor that you expected.
Chofetz Chaim Daily 18 Av 10:9 If people won’t suspect the speaker of going behind the subject’s back (eg. tzadik), then it doesn’t need to be said in front of 3 people. 10:10 Relating someone’s wrongdoing bein adam laMakom is only mutar if it’s a known aveira and you’ve seen him do it many times b’mazid, unless he is a Tinok Shenishba (someone who didn’t have adequate Jewish education or stable youth)
Chofetz Chaim Daily 13 Av 9:5 Mitzvah to restrain even your young children from LH so they’ll get into the habit. 9:6 Asur to repeat private matters heard from a friend.
Chofetz Chaim Daily 12 Av 9:3 Asur to relate praise that may cause damage. Eg. Telling that ploni hosted you or lent you money, etc. This can cause ploni harm bc others will now demand the same. Asur to say something that can be mistaken for LH. 9:4 Asur to live among baalei LH. Asur to listen even if not intending to believe. One who finds himself in a group of LH speakers must protest even if you know they won’t listen.
Chofetz Chaim Daily 11 Av 9:1 Asur to speak AVAK LH which is a negative inference eg. “who would think ploni would end up so good?”, “its better we dont talk about ploni” Praising ploni in presence of an enemy or excessive praise to any listener is also avak LH. 9:2 All praise is asur in public, except about universally accepted Tzaddik.
Chofetz Chaim Daily 6 Av 8:5 Mitzvah to say LH about a known apikores (one who denies anything of written or oral law) The Poskim say that a Tinok Shenishba has a Halacha of a regular Jew and no LH should be said about him, unless it is LeToeles with all the conditions. 8:6 If its a rumor, you can suspect and stay away, but do not believe it until you see it yourself or otherwise verify it. 8:7 Same laws apply for a rasha. Here again the Halachos are different for a Tinok Shenishba.