We entered into the state of Ihram with Messenger of Allah ﷺ for Hajj Mufrad and in the narration of Ibn 'Aun (the words are):" Messenger of Allah ﷺ entered into the state of Ihram (with the intention) of Hajj Mufrad."  

أَهْلَلْنَا مَعَ رَسُولِ اللَّهِ ﷺ بِالْحَجِّ مُفْرَدًا وَفِي رِوَايَةِ ابْنِ عَوْنٍ أَنَّ رَسُولَ اللَّهِ ﷺ أَهَلَّ بِالْحَجِّ مُفْرَدًا  

I heard Allah's Apostle (way peace be upon him) pronouncing Talbiya for both Hajj and Umra. Bakr (one of the narrators) said: I narrated it to Ibn 'Umar, whereupon he said: He (the Holy Prophet) pronounced the Talbiya for Hajj alone. I met Anas and narrated to him the words of Ibn 'Umar, whereupon he said: You treat us not but only as children. I heard Messenger of Allah ﷺ pronouncing Talbiya both for 'Umra and Hajj.  

سَمِعْتُ النَّبِيَّ ﷺ يُلَبِّي بِالْحَجِّ وَالْعُمْرَةِ جَمِيعًا قَالَ بَكْرٌ فَحَدَّثْتُ بِذَلِكَ ابْنَ عُمَرَ فَقَالَ لَبَّى بِالْحَجِّ وَحْدَهُ فَلَقِيتُ أَنَسًا فَحَدَّثْتُهُ بِقَوْلِ ابْنِ عُمَرَ فَقَالَ أَنَسٌ مَا تَعُدُّونَنَا إِلاَّ صِبْيَانًا سَمِعْتُ رَسُولَ اللَّهِ ﷺ يَقُولُ لَبَّيْكَ عُمْرَةً وَحَجًّا  

Anas (Allah be pleased with him) had narrated to us that he saw Allah's Apostle ﷺ combining Hajj and 'Umra. He (Bakr) said: I asked (about it) from Ibn 'Umar, whereupon he said: We entered into the state of Ihram for Hajj (only). I came to Anas and told him what Ibn Umar had said, whereupon he remarked: (You are treating us) as if we were children.  

أَنَّهُ رَأَى النَّبِيَّ ﷺ جَمَعَ بَيْنَهُمَا بَيْنَ الْحَجِّ وَالْعُمْرَةِ قَالَ فَسَأَلْتُ ابْنَ عُمَرَ فَقَالَ أَهْلَلْنَا بِالْحَجِّ فَرَجَعْتُ إِلَى أَنَسٍ فَأَخْبَرْتُهُ مَا قَالَ ابْنُ عُمَرَ فَقَالَ كَأَنَّمَا كُنَّا صِبْيَانًا