(1) It is not permissible to be dressed with a T-shirt and jeans for Salaat, nor is it permissible to be dressed with any garment on which is inscribed logos and slogans. Such tight pants which show the body outline, especially the Satr portion when in Sajdah are haraam. With these types of lewd dress, the Salaat is not valid. That means that the Salaat has to be repeated with proper dress.
A person who is so incorrigibly westernized as to feel embarrassed with Islamic dress in public, should at least repeat his Salaat at home after donning proper Islamic garments. In the first instance it is not permissible to be dressed like a kaafir with T-shirt and jeans. Nevertheless, if someone’s Imaan is so terribly deficient that he feels ashamed in public to be dressed Islamically, then at least to ensure that his Salaat obligation is discharged, he should repeat his Salaat at home donning correct dress.

(2) If there are musallis in the Musjid, it is then not permissible to recite the Qur’aan Majeed audibly. It is haraam to disturb the concentration of the Musallis even with the Qur’aan Shareef.

(3) When standing in the Saff for Jamaat Salaat, it is incumbent for the shoulders to lightly touch. Any gap between two musallis is filled by a shaitaan.

(4) Those sitting on chairs for Salaat should not extend their hands beyond their knees into the air for Sajdah. The hands should remain on the thighs.

(5) In the Qiyaam (Standing) position, both feet must be pointed straight in the direction of the Qiblah. The feet should not be at angles away from the Qiblah.

(6) When raising the hands with Takbeer, both palms must be towards the Qiblah, not towards the face.

(7) It is compulsory to join the Jamaat at the time of Takbeer Ulaa (i.e. the first Takbeer at the beginning). Strolling at leisure from the back whilst the Imaam has already commenced the Qiraa’t was the habit of the Munaafiqeen (Hypocrites). To avoid resemblance with the Munaafiqeen, fall into the Sufoof (Rows) immediately the Iqaamah begins.

(8) After the Fardh Salaat, engage in your own Dua. Do not sit idly with the hands lifted whilst the Imaam is making his silent Dua. Every Musalli should make his own Dua. It is not necessary to begin and end the Dua with the Imaam.

(9) If in Ruku’ of the third Raka’t of Witr you remember having forgotten to recite Dua-e-Qunoot, then do not abandon the Ruku’ to recite Qunoot. Continue the Salaat as usual and make Sajdah Sahw to compensate for the omission of Dua-e-Qunoot.

(10) Remember that it is sinful to arrive late for the Jamaat without valid reason. Many musallis have developed the sinful habit of arriving late without valid reason. Missing a Raka’t of the Jamaat Salaat is a great calamity, the consequences of which will be properly understood only in Qiyaamah. Salaat is the Centre Pillar of the Deen. It upholds the entire Structure of the Deen. Weakness in this fundamental Pillar results in numerous deficiencies in all other branches of the Deen.