ISSUE 246: Extending the ruku' and sujud and reading the long Surahs of the Qur'an do not break the Muwalat of the Salat.
ISSUE 247: In the second rak'at of Salat after the recitation of Surah al-Fatiha and the other Surah, before going to ruku', it is mustahab to recite qunut; meaning the hands are lifted up in front of the face, and dua' and dhikr is recited.
ISSUE 248: Whatever dhikr recited in qunut is sufficient, even as much as ( سبحان الله ) and one is also able to recite the following dua':
(ربنا اتنا فى الدنيا حسنة و في الأخرة حسنة و قنا عذاب النار)
Ta'qib refers to the recitation of dhikr and dua', and the recitation of the Qur'an after the Salat.
ISSUE 249: It is better that while in the state of ta'qib, one is facing the Qiblah.
ISSUE 250: It is not necessary that the ta'qib be recited in arabic, but is is better that those dua' that are mentioned in the appropriate books are recited.
ISSUE 251: One of the things in the ta'qib of Salat that has been highly recommended to recite is the tasbih of Hadhrat Fatimah az-Zahra' ('a), which is as follows: ( الله اكبر )
34 times, then ( الحمد لله ) times, then ( سبحان الله )
33 times.
ISSUE 252: From the time one says the Takbiratul Ihram and starts his Salat, until the end of the Salat, many actions become haram for him, and if any of these are performed during the Salat, the Salat will become void, for example:
Speaking
Laughing
Crying
Turning away from the Qiblah
Eating and Drinking
Breaking the form of the Salat
Adding or taking away anything from the arkan of Salat (These were explained in rule 194)16
ISSUE 253: If the person who is praying intentionally says a word, even as much as a word that is only one letter, and if this word has a meaning in itself, the Salat is void.
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16 To learn about more of the mubtilat of Salat, one can refer to tule 1135 in the Taudihul Masail.