Son, never speak lies. It displeases Allah and dishonours the liar. No one trusts a liar. His words and deeds are not trust-worthy. As far as possible, avoid Toria' (Toria' means words with double meanings.)"Toria" is not a lie but there is salvation in truth. Many a times it has been witnessed that Allah had averted serious calamities because of truthfulness.
Don't ever utter words by which someone learns to speak lies. What I mean is that momeen should desist from speaking such words which give others a chance to create false stories.