I used to recognize the completion of the prayer of the Prophet by hearing Takbir.

The Prophet offered the funeral prayer of As-Hama An-Najash and said four Takbir.

The Prophet offered the funeral prayer for Ashama, the Negus, with four Takbir.

The Messenger of Allah (saws) used to recite the Qur'an to us. When he came upon the verse containing prostration, he would utter the takbir (Allah is most great) and we would prostrate ourselves along with him.

The narrator 'Abd al-Razzaq said: Al-Thawri liked this tradition very much.

Abu Dawud said: This was liked by him for this contains the uttering of takbir.

When the Messenger of Allah (saws) stood for offering the obligatory prayer, he uttered the takbir (Allah is most great) and raised his hands opposite to his shoulders; and he did like that when he finished recitation (of the Qur'an) and was about to bow; and he did like that when he rose after bowing; and he did not raise his hands in his prayer while he was in his sitting position.

When he stood up from his prostrations (at the end of two rak'ahs), he raised his hands likewise and uttered the takbir (Allah is most great) and raised his hands so as to bring them up to his shoulders, as he uttered the takbir in the beginning of the prayer.

The key to prayer is purification; its beginning is takbir and its end is taslim.

Abu dawud said: Anyone who narrated this tradition did not mention the words “ then he uttered the takbir”, nor the words “he returned”

Once Allah's Apostle led us in prayer, and after finishing the first two rak`at, got up (instead of sitting for at-Tahiyyat) and then carried on with the prayer. When he had finished his prayer, the people were waiting for him to say Taslim, but before saying Tasiim, he said Takbir and prostrated; then he raised his head, and saying Takbir, he prostrated (SAHU) and then raised his head and finished his prayer with Taslim.

Allah's Apostle fell from a horse and got injured so he led the prayer sitting and we also prayed sitting. When he completed the prayer he said, "The Imam is to be followed; if he says Takbir then say Takbir, bow if he bows; raise your heads when he raises his head, when he says, 'Sami`a l-lahu liman hamidah say, 'Rabbana laka l-hamd', and prostrate when he prostrates."

Whenever we went up a place we would say Takbir, and whenever we went down we would say, "Subhan Allah."

Allah's Apostle finished his prayer after offerings two rak`at only. Dhul-Yaddain asked him whether the prayer had been reduced, or you had forgotten?" The Prophet said, "Is Dhul-Yaddain speaking the truth?" The people said, "Yes." Then Allah's Apostle stood up and performed another two rak`at and then finished prayer with Taslim, and then said the Takbir and performed a prostration similar to or longer than his ordinary prostrations; then he raised his head, said Takbir and prostrated and then raised his head (Sahu prostrations).

Yahya related to me from Malik from Yahya ibn Said from Abdullah ibn al-Mughira ibn Abi Burda al-Kinani that he had heard that the Messenger of Allah, may Allah bless him and grant him peace, came to the people in their tribes and made dua for them, but left out one of the tribes. Abdullah related, "The tribe found an onyx necklace in the saddle-bags of one of their men. The Messenger of Allah, may Allah bless him and grant him peace, came to them, and then did the takbir over them as one does the takbir over the dead."

"Allah's Apostle made them (i.e. the Muslims) stand in rows at the Musalla (i.e. praying place) and led the funeral prayer for the Negus and said four Takbir."

Suhail reported on the authority of his father that Abu Huraira used to recite takbir on all occasions of rising and bending (in prayer) and narrated that the Messenger of Allah (may peace be upon him) used to do like that.

Then the other section came; they stood up and uttered the takbir and bowed by themselves. The Messenger of Allah (saws) prostrated himself and they also prostrated with him. Then the Messenger of Allah (saws) stood up and they performed the second prostration by themselves. Then both the sections stood up and prayed with the Messenger of Allah (saws). He bowed and they also bowed, and then he prostrated himself and they also prostrated themselves. Then he returned and performed the second prostration and they also prostrated with him as quickly as possible, showing no slackness in quick prostration. The Messenger of Allah (saws) then uttered the salutation. After that the Messenger of Allah (saws) stood up. Thus everyone participated in the entire prayer.

I offered the prayer with `Ali in Basra and he made us remember the prayer which we used to pray with Allah's Apostle. `Ali said Takbir on each rising and bowing.

The Prophet (p.b.u.h) informed his companions about the death of An-Najashi and then he went ahead (to lead the prayer) and the people lined up behind him in rows and he said four Takbir.

The Messenger of Allah (saws) used to straighten our rows when we stood up to pray, and when we were straight, he said: Allah is most great (takbir).

The Prophet offered as sacrifices, two horned rams, black and white in color. He slaughtered them with his own hands and mentioned Allah's Name over them and said Takbir and put his foot on their sides.

Yahya related to me from Malik that he asked Ibn Shihab about talking in the jumua after the imam had come down from the mimbar but before he had said the takbir. Ibn Shihab said, "There is no harm in that."

Yahya related to me from Malik from Nafi that Umar ibn al-Khattab used to order the rows to be straightened, and when they had come to him and told him that the rows were straight he would say the takbir.

The Prophet performed Tawaf of the Ka`ba riding a camel, and every time he came in front of the Corner (having the Black Stone), he pointed towards it with something he had with him and said Takbir.

The Prophet led us in the Zuhr prayer, offering only two rak`at and then (finished it) with Taslim, and went to a piece of wood in front of the mosque and put his hand over it. Abu Bakr and `Umar were also present among the people on that day but dared not talk to him (about his unfinished prayer). And the hasty people went away, wondering. "Has the prayer been shortened" Among the people there was a man whom the Prophet used to call Dhul-Yadain (the longarmed). He said, "O Allah's Prophet! Have you forgotten or has the prayer been shortened?" The Prophet said, "Neither have I forgotten, nor has it been shortened." They (the people) said, "Surely, you have forgotten, O Allah's Apostle!" The Prophet said, Dhul-Yadain has told the truth." So the Prophet got up and offered other two rak`at and finished his prayer with Taslim. Then he said Takbir, performed a prostration of ordinary duration or longer, then he raised his head and said Takbir and performed another prostration of ordinary duration or longer and then raised his head and said Takbir (i.e. he performed the two prostrations of Sahu, i.e., forgetfulness).

The Prophet offered one of the evening prayers (the sub-narrator Muhammad said, "I think that it was most probably the `Asr prayer") and he finished it after offering two rak`at only. He then stood near a price of wood in front of the Mosque and put his hand over it. Abu Bakr and `Umar were amongst those who were present, but they dared not talk to him about that (because of excessive respect for him), and those who were in a hurry went out. They said, "Has the prayer been reduced?" A man who was called Dhul-Yadain by the Prophet said (to the Prophet), "Has the prayer been reduced or have you forgotten?" He said, "Neither have I forgotten, nor has the prayer been reduced." He said, "Certainly you have forgotten." So the Prophet offered two more rak`at and performed Taslim and then said Takbir and performed a prostration of Sahu like his ordinary prostration or a bit longer and then raised his head and said Takbir and then put his head down and performed a prostration like his ordinary prostration or a bit longer, and then raised his head and said Takbir.

The Prophet slaughtered two rams, black and white in color (as sacrifices), and I saw him putting his foot on their sides and mentioning Allah's Name and Takbir (Allahu Akbar). Then he slaughtered them with his own hands.

The Prophet (saws) said: The key of prayer is purification; takbir (saying "Allah is most great") makes (all acts which break prayer) unlawful and taslim (uttering the salutation) makes (all such acts) lawful.