Narrated Anas: The Prophet (ﷺ) said, "Whenever anyone of you is in prayer, he is speaking in private to his Lord and so he should neither spit in front of him nor on his right side but to his left side under his left foot."

Narrated `Abdullah: I used to greet the Prophet (ﷺ) while he was in prayer and he would return my greeting, but when we returned (from Ethiopia) I greeted the Prophet (while he was praying) but he did not return the greeting, and (after finishing the prayer) he said, "In the prayer one is occupied (with a more serious matter)."

Narrated Sahl bin Sa`d: The news about the differences amongst the people of Bani `Amr bin `Auf at Quba reached Allah's Apostle and so he went to them along with some of his companions to affect a reconciliation. Allah's Apostle was delayed there and the time for the prayer became due. Bilal came to Abu Bakr! and said, "O Abu Bakr! Allah's Messenger (ﷺ) is detained (there) and the time for the prayer is due. Will you lead the people in prayer?" Abu Bakr replied, "Yes, if you wish." So Bilal pronounced the Iqama and Abu Bakr went forward and the people said Takbir. In the meantime, Allah's Messenger (ﷺ) came piercing through the rows till he stood in the (first) row and the people started clapping. Abu Bakr, would never look hither and thither during the prayer but when the people clapped much he looked back and saw Allah's Messenger. The Prophet (ﷺ) beckoned him to carry on. Abu Bakr raised both his hands, praised Allah and retreated till he stood in the row and Allah's Messenger (ﷺ) went forward and led the people in the prayer. When he had finished the prayer, he addressed the people and said, "O people! Why did you start clapping when something happened to you in the prayer? Clapping is for women. Whenever one is confronted with something unusual in the prayer one should say, 'Sub Han Allah'." Then the Prophet looked towards Abu Bakr and asked, "What prevented you from leading the prayer when I beckoned you to carry on?" Abu Bakr replied, "It does not befit the son of Al Quhafa to lead the prayer in the presence of Allah's Messenger.

Narrated Abu Huraira: It was forbidden to keep the hands on the hips during the prayer. (This is narrated by Abu Huraira from the Prophet.)

Narrated `Uqba bin Al-Harith: I offered the `Asr prayer with the Prophet (ﷺ) and after finishing the prayer with Taslim he got up quickly and went to some of his wives and then came out. He noticed the signs of astonishment on the faces of the people caused by his speed. He then said, "I remembered while I was in my prayer that a piece of gold was Lying in my house and I disliked that it should remain with us throughout the night, and so I have ordered it to be distributed."

Narrated Abu Huraira: Allah's Messenger (ﷺ) said, "When the Adhan for the prayer is pronounced, then Satan takes to his heels passing wind so that he may not hear the Adhan and when the Mu'adh-dhin finishes, he comes back; and when the Iqama is pronounced he again takes to his heels and when it is finished, he again comes back and continues reminding the praying person of things that he used not to remember when not in prayer till he forgets how much he has prayed." Abu Salama bin `Abdur-Rahman said, "If anyone of you has such a thing (forgetting the number of rak`at he has prayed) he should perform two prostrations of Sahu (i.e. forgetfulness) while sitting." Abu Salama narrates this from Abu Huraira.

Narrated Abu Huraira: People say that I narrate too many narrations of the Prophet; once I met a man (during the lifetime of the Prophet) and asked him, "Which Sura did Allah's Messenger (ﷺ) s recite yesterday in the `Isha' prayer?" He said, "I do not know." I said, "Did you not attend the prayer?" He said, "Yes, (I did)." I said, "I know. He recited such and such Sura."