6:72Al-An'aam

The last words which the Messenger of Allah (ﷺ) spoke were: Prayer, prayer; fear Allah about those whom your right hands possess.

" He should aim at correct (prayer) and it is advisable."

He who prayed the morning prayer (in congregation) he is in fact under the protection of Allah. And it can never happen that Allah should demand anything from you in connection with the protection (that He guarantees) and one should not get it. He would then throw him in the fire of Hell.

"The fear prayer was no more than two prostrations like the prayer of these guards of yours today behind the Imams of yours, except that it was one group after another. One group stood, although they were all behind the Messenger of Allah (ﷺ), and one group prostrated with him, then the Messenger of Allah (ﷺ) stood up and they all stood with him. Then he bowed and they all bowed with him, then he prostrated and those who had been standing the first time prostrated with him. When the Messenger of Allah (ﷺ) and those who had prostrated with him at the end of their prayer sat, those who had been standing prostrated by themselves, then they sat and the Messenger of Allah (ﷺ) said the taslim with all of them.

(describing the Fear prayer): The Imam stands up facing the Qibla and one batch of them (i.e. the army) (out of the two) prays along with him and the other batch faces the enemy. The Imam offers one rak`a with the first batch they themselves stand up alone and offer one bowing and two prostrations while they are still in their place, and then go away to relieve the second batch, and the second batch comes (and takes the place of the first batch in the prayer behind the Imam) and he offers the second rak`a with them. So he completes his two-rak`at and then the second batch bows and prostrates two prostrations (i.e. complete their second rak`a and thus all complete their prayer). (This hadith has also been narrated through two other chain by Sahl b. Abi Hathma)