If on account of refraining oneself from laughing aloud one’s condition changes – for example, the colour of his face turns red – the obligatory precaution is that he must perform his prayer again. Eighth: based on obligatory precaution, intentionally crying loudly or silently over a worldly matter. However, if one cries silently or loudly out of fear of Allah the Exalted, or in eagerness for Him or the Hereafter, there is no problem; indeed, it is among the best actions.
If one cries in asking Allah the Exalted for a worldly matter in humility to Him, there is no problem. Ninth: doing something that breaks the form of the prayer, such as jumping in the air and suchlike, whether intentionally or forgetfully. However, doing something that does not break the form of the prayer, such as indicating with one’s hand, is not a problem.