Issue 552: From the time when a person pronounces Takbeerat-ul-ihram and while being praying till the end, some things become forbidden for them to do, and if they do one of those things, their prayer will be void.

There are twelve things which invalidate prayers, and they are called "Mubtilaat".

1- If any of the requisites of prayers ceases to exist while one is in prayer; for instance, if while praying one comes to know that the place where they are praying is a usurped one.

2- If a person, intentionally or unintentionally, or uncontrollably commits an act which invalidates their Wudhu or Ghusl.

3- If a person talks while praying, their prayers will be void.

4- If a person laughs while praying, their prayers will be void.

5- If a person weeps while praying, their prayers will be void.

6- If while praying, a person turns their face away from the Quiblah their prayers will be void.

7- If while praying, a person eats or drinks something, their prayers will be void.

8- If one's figure and form of praying changes, their prayers will be void.

9-If a person omits one of or adds to the elements (Rukns) of prayers, their prayers will be void. (See issues 361 and 362)

10- If a person offers their prayers arms crossed, like some Muslims who are not Shi'ite, their prayers will be void.

11- If a person says "Amen" after reciting Al-Hamd, their prayers will be void; But if this is done by mistake, or while dissimulating (Pretending to have certain beliefs of one's life or property being in danger), their prayers will not be void.

Q553: What is the case of praying with arms crossed?

A: If it is not due to dissimulating, it is illegal and the prayers will be void.

12- If while praying a person doubts about the number of the Rak'ats they have offered of a two-Rak'at or three Rak'at prayer, or about the first two Rak'ats of a four Rak'at prayer, their prayer will be void.