Question 308) - What is the status of this Takbir?

A: it is wajib upon one who has prayed any of the five Fard or Jumu'ah. it is read immediately after Salam. The meaning of immediately is to recite it without such a pause which prevents one from continuing Salah. Thus if he leaves the Masjid, talks deliberately or accidentally, or breaks his wudu deliberately then the Takbir falls away- There are two views regarding turning one's back to the Qiblah. As for falling into Hadath unintentionally after Salam then the more correct opinion is to read Takbir and not to go and renew wudu. [Raddul Muhtar (562/1)]

~ al-Quduri ~