Do's and Don'ts of Namaz

1.  In the Takbeer-e-Tahrima to use the words 'Allah-o-Akbar'
2. To pray the whole of the Alhamdo Surat.
3. To join a Surat or a verse (Ayat) with Alhamdo. In a Farz Namaz for the first two Rakats and in a Witr, Sunnat or Nafl Namaz in all the Rakats.
4. To pray before a Surat or Ayat, Alhamdo only once.
5. Between Alhamdo and a Surat not to pray anything except 'Ameen' and Bismillah...
6. To go into Rukoo as soon as the Qirayat is finished
7. To perform one Sijdah after another without having a delayed gap in between. The gap must be no longer than one Rukun, meaning the time it takes someone to say 'Subhanallah' three times.
8. To pause between actions, meaning a gap of time the same as at least one 'Subhanallah' between, Rukoo, Sijdah, Quwmaa and Jalsa.
9. Quwma, meaning to stand up straight after Rukoo.
10. When in Sijdah to have three toes on each foot to be flat on the ground and the tips pointing towards Qibla.
11. Jalsa, meaning to sit up between two Sijdahs.
12. Qaidah-e-Oola, meaning to sit after two Rakats, if there are more than two Rakats in a Namaz, whether it is a Nafl (voluntary) Namaz.
13. Not to continue further after Tashahhud (Attahiyat) in a Qaida-e-Oola for a Farz, Witr or Sunnat-e-Maukida Namaz.
14. To pray in both Qaidahs the whole of Tashahhud, in fact, regardless of the amount of Qaidahs in a Namaz to pray the whole of Tashahhud is Wajib, if even one word is left out of Attahiytat the Wajib will be missed.
15. In both Salaams the word Salaam is Wajib, the words 'Alaikum Wa Rahmutullah' is not Wajib.
16. To pray 'Dua-e-Kunoot' in Witr.
17. To perform Takbeer in Kunoot (To lift your hands and say Allah-o-Akbar in the third Rakat of Witr).
18. All six Takbeers of Eid Namaz's
19. The Takbeers in the second rakat of the Eid Namaz and for them to have the words 'Allah-o-Akbar.
20. The Imam to pray loudly in all Jehri Namaz and to pray quietly in non Jehri Namaz.
21. To pray all Farz and Wajib Namaz in routine (meaning to pray the before one's before and the after one's after).
22. To perform only one Rukoo in every rakat and to perform only two Sijdahs.
23. Not to perform a Qaidah before two rakats and not to perform a Qaida in the third rakat if it is a four rakat Namaz.
24. To perform Sijdah-e-Tilawat if an Ayat of Sijdah has been prayed.
25. If there has been an error (where a Wajib has been missed) then to perform Sijdah-e-Sahoo.
26. There is not to be a gap between two Farz actions or between two Wajib actions or a Farz and a Wajib actions longer than the time it takes to say Subhanallah three times.
27. If the Imam is performing Qirayat, whether it is loudly or quietly, the Muqtadees to remain completely quiet.
28. Except for Qirayat, to follow the Imam in all the Wajibs.

Watch video of Namaz Steps ( Namaz ka Tarika)

Except for the Farz and Wajib actions, all the rest of the actions mentioned in the method of Namaz are either Sunnat or Mustahhab. They should not be missed on purpose, and if they are missed by mistake then it is not necessary to perform Sijdah-e-Sahoo nor repeat the Namaz. If however, you repeated the Namaz then it is a good thing. If you want to know in more detail the Sunnats and Mustahhabs then read either Bahar-e-Shariat or Fatawa-e-Razvia as we have not gone into small detail or abbreviated them here.