Question
If my children laugh during prayer, does their prayer become invalid? And what does it mean by the amount of two letters?
Answer
I say, and with God's success: If your children are of age and they laugh loudly enough for others to hear their voices, their ablution is invalidated, and this is called a "laughing out loud" (we can add this). If the sound contains two letters, and if they are not of age, their ablution is not invalidated. And God knows best.