Itmam At-Takbir (i.e., to end the number of Takbir, or to say the Takbir perfectly) on prostrating. [See Fath Al-Bari]
باب إِتْمَامِ التَّكْبِيرِ فِي السُّجُودِ
Sahih al-Bukhari, Book of Call to Prayers (Adhaan)(view book)
Narrated Mutarrif bin 'Abdullah:
'Imran bin Husain and I offered the prayer behind Ali bin Abi Talib. When 'Ali prostrated, he said the Takbir, when he raised his head, he said the Takbir and when he got up for the third Rak'a he said the Takbir. On completion of the prayer Imran took my hand and said, "This (i.e. 'Ali) made me remember the prayer of Muhammad" Or he said, "He led us in a prayer like that of Muhammad."
حَدَّثَنَا أَبُو النُّعْمَانِ، قَالَ حَدَّثَنَا حَمَّادٌ، عَنْ غَيْلاَنَ بْنِ جَرِيرٍ، عَنْ مُطَرِّفِ بْنِ عَبْدِ اللَّهِ، قَالَ صَلَّيْتُ خَلْفَ عَلِيِّ بْنِ أَبِي طَالِبٍ ـ رضى الله عنه ـ أَنَا وَعِمْرَانُ بْنُ حُصَيْنٍ،، فَكَانَ إِذَا سَجَدَ كَبَّرَ، وَإِذَا رَفَعَ رَأْسَهُ كَبَّرَ، وَإِذَا نَهَضَ مِنَ الرَّكْعَتَيْنِ كَبَّرَ، فَلَمَّا قَضَى الصَّلاَةَ أَخَذَ بِيَدِي عِمْرَانُ بْنُ حُصَيْنٍ فَقَالَ قَدْ ذَكَّرَنِي هَذَا صَلاَةَ مُحَمَّدٍ ﷺ. أَوْ قَالَ لَقَدْ صَلَّى بِنَا صَلاَةَ مُحَمَّدٍ ﷺ.
Classification
Narrated 'Ikrima:
I saw a person praying at Muqam-lbrahim (the place of Abraham by the Ka'ba) and he was saying Takbir on every bowing, rising, standing and sitting. I asked Ibn 'Abbas (about this prayer). He admonished me saying: "Isn't that the prayer of the Prophet?"
حَدَّثَنَا عَمْرُو بْنُ عَوْنٍ، قَالَ حَدَّثَنَا هُشَيْمٌ، عَنْ أَبِي بِشْرٍ، عَنْ عِكْرِمَةَ، قَالَ رَأَيْتُ رَجُلاً عِنْدَ الْمَقَامِ يُكَبِّرُ فِي كُلِّ خَفْضٍ وَرَفْعٍ وَإِذَا قَامَ وَإِذَا وَضَعَ، فَأَخْبَرْتُ ابْنَ عَبَّاسٍ ـ رضى الله عنه ـ قَالَ أَوَلَيْسَ تِلْكَ صَلاَةَ النَّبِيِّ ﷺ لاَ أُمَّ لَكَ.