Informing companions of good deeds without need

Question:
May Allah reward you with good and do you good. Our sister also asks: Is it considered showing off (riya') if I talk to my friends and tell them that I am happy and content, and I say, "Praise be to Allah that I fasted the six days of Shawwal and that I have started standing in night prayer," even though, praise be to Allah, I did not fast or stand in prayer except for the sake of Allah (Glorified and Exalted is He)?

Answer:
Speaking about a person's deeds should not be done unless there is a need for it. For example, if you want to advise your sisters and encourage them to fast voluntarily and stand in night prayer, you may inform them of this in order to encourage and urge them to do good so that they may follow your example; there is nothing wrong with that. However, if the intention behind it is to praise oneself for this deed, then it becomes showing off (riya'), and it may even invalidate the deed itself.