Thoughts imbibed

Sometime back, rather long time back, i had read an article somewhere, don't remember, it referred to Maulana Ali Amirul Mumineen AS, as advising people that you should be very careful of what thoughts you imbibe into someone else by way of expressing your thoughts, be careful that it should not ruin the happy life of theirs (to whom you give an advice, though the thought may seem good to you, but may trigger a problem in their happy life) and their family and turn their life into nightmare, giving them sleepless nights, or causing problem to them. 

Quran al kareem says, you will be accounted for and awarded for every bit of good you do, and you will be accounted for and awarded for every bit of bad you do.