Anas said, "I will leave no stone unturned in making you offer the prayer as I have seen the Prophet ﷺ making us offer it." Anas used to do a thing which I have not seen you doing. He used to stand after the bowing for such a long time that one would think that he had forgotten (the prostrations) and he used to sit in-between the prostrations so long that one would think that he had forgotten the second prostration.  

أَنْ أُصَلِّيَ بِكُمْ كَمَا رَأَيْتُ النَّبِيَّ ﷺ يُصَلِّي بِنَا قَالَ ثَابِتٌ كَانَ أَنَسٌ يَصْنَعُ شَيْئًا لَمْ أَرَكُمْ تَصْنَعُونَهُ كَانَ إِذَا رَفَعَ رَأْسَهُ مِنَ الرُّكُوعِ قَامَ حَتَّى يَقُولَ الْقَائِلُ قَدْ نَسِيَ وَبَيْنَ السَّجْدَتَيْنِ حَتَّى يَقُولَ الْقَائِلُ قَدْ نَسِيَ  

While leading you in prayer I do not shorten anything in the prayer. I pray as I saw the Messenger of Allah ﷺ leading us. He (Thabit) said: Anas used to do that which I do not see you doing; when he lifted his head from bowing he stood up (so long) that one would say: He has forgotten (to baw down in prostration). And when he lifted his head from prostration, he stayed in that position, till someone would say: He has forgotten (to bow down in prostration for the second sajda). (Using translation from Muslim 472)  

أَنْ أُصَلِّيَ بِكُمْ كَمَا كَانَ رَسُولُ اللهِ ﷺ يُصَلِّي بِنَا قَالَ فَكَانَ أَنَسٌ يَصْنَعُ شَيْئًا لَا أَرَاكُمْ تَصْنَعُونَهُ كَانَ إِذَا رَفَعَ رَأْسَهُ مِنَ الرُّكُوعِ انْتَصَبَ قَائِمًا حَتَّى يَقُولَ الْقَائِلُ لَقَدْ نَسِيَ وَكَانَ إِذَا رَفَعَ رَأْسَهُ مِنَ السَّجْدَةِ قَعَدَ حَتَّى يَقُولَ الْقَائِلُ لَقَدْ نَسِيَ  

[Machine] "To pray with you as I have seen the Messenger of Allah ﷺ praying with us," Thabit said, "I saw Anas ibn Malik doing something that I do not see you doing. When he raised his head from bowing, he would stand until the person saying 'He forgot' would say it, and when he raised his head from the first prostration, he would sit until the person saying 'He forgot' would say it."  

أَنْ أُصَلِّيَ بِكُمْ كَمَا رَأَيْتُ رَسُولَ اللَّهِ ﷺ يُصَلِّي بِنَا قَالَ ثَابِتٌ رَأَيْتُ أَنَسَ بْنَ مَالِكٍ يَصْنَعُ شَيْئًا لَا أَرَاكُمْ تَصْنَعُونَهُ «كَانَ إِذَا رَفَعَ رَأْسَهُ مِنَ الرُّكُوعِ قَامَ حَتَّى يَقُولَ الْقَائِلُ لَقَدْ نَسِيَ وَإِذَا رَفَعَ رَأْسَهُ مِنَ السَّجْدَةِ الْأُولَى قَعَدَ حَتَّى يَقُولَ الْقَائِلُ لَقَدْ نَسِيَ»  

[Machine] "That I pray with you as I saw the Messenger of Allah ﷺ praying with us," Hammād said, Thābit said, "And Anas used to do something with us that I don't see you doing. When he raised his head from the bowing position, he stood up straight until the person saying the prayer said that he had forgotten. And when he raised his head from prostration, he remained in a sitting position until the person saying the prayer said that he had forgotten."  

أَنْ أُصَلِّيَ بِكُمْ كَمَا رَأَيْتُ رَسُولَ اللهِ ﷺ يُصَلِّي بِنَا قَالَ حَمَّادٌ قَالَ ثَابِتٌ وَكَانَ أَنَسٌ يَصْنَعُ بِنَا شَيْئًا لَا أَرَاكُمْ تَصْنَعُونَهُ كَانَ إِذَا رَفَعَ رَأْسَهُ مِنَ الرُّكُوعِ انْتَصَبَ قَائِمًا حَتَّى يَقُولَ الْقَائِلُ قَدْ نَسِيَ وَإِذَا رَفَعَ رَأْسَهُ مِنَ السَّجْدَةِ اسْتَوَى جَالِسًا حَتَّى يَقُولَ الْقَائِلُ قَدْ نَسِيَ  

[Machine] "That I pray with you as I saw the Messenger of Allah ﷺ praying with us," Thabit said, "And Anas used to do something that I don't see you doing. When he raised his head from the bowing position, he would stand still until the person behind him said, 'He has forgotten.' And when he raised his head between the two prostrations, he would sit until the person behind him said, 'He has forgotten the phrase of the hadith of Sulaiman ibn Harb.'"  

أَنْ أُصَلِّيَ بِكُمْ كَمَا رَأَيْتُ رَسُولَ اللهِ ﷺ يُصَلِّي بِنَا قَالَ ثَابِتٌ وَكَانَ أَنَسٌ يَصْنَعُ شَيْئًا لَا أَرَاكُمْ تَصْنَعُونَهُ كَانَ إِذَا رَفَعَ رَأْسَهُ مِنَ الرُّكُوعِ قَامَ حَتَّى يَقُولَ الْقَائِلُ قَدْ نَسِيَ وَإِذَا رَفَعَ رَأْسَهُ بَيْنَ السَّجْدَتَيْنِ قَعَدَ حَتَّى يَقُولَ الْقَائِلُ قَدْ نَسِيَ لَفْظُ حَدِيثِ سُلَيْمَانَ بْنِ حَرْبٍ