I saw ʿAli and ʿUthman ؓ between Makkah and Madinah. ʿUthman was telling people not to do tamattuʿ or join them together (Hajj and ‘Umrah, i.e., qiran). When ʿAli ؓ saw that, he entered ihram for both of them together and said: Here I am for ʿUmrah and Hajj together ‘Uthman ؓ said: You see me telling the people not to do that and you do it? He said: I will not give up a Sunnah of the Messenger of Allah ﷺ for the opinion of anyone among the people. (Using translation from Aḥmad 1139)   

أَنَّهُ شَهِدَ عَلِيًّا وَعُثْمَانَ بَيْنَ مَكَّةَ وَالْمَدِينَةِ وَعُثْمَانُ يَنْهَى عَنِ الْمُتْعَةِ فَلَمَّا رَأَى ذَلِكَ عَلِيٌّ أَهَلَّ بِهِمَا جَمِيعًا فَقَالَ «لَبَّيْكَ بِحَجَّةٍ وَعُمْرَةٍ مَعًا» فَقَالَ تَرَانِي أَنْهَى عَنْهُ وَتَفْعَلُهُ فَقَالَ «لَمْ أَكُنْ لِأَدَعَ سُنَّةَ رَسُولِ اللَّهِ ﷺ بِقَوْلِ أَحَدٍ مِنَ النَّاسِ»  

“Labbaika bi-‘Umratin wa hajjatin [Here I am (O Allah), for ‘Umrah and Hajj].” (Using translation from Ibn Mājah 2969)   

أَنَّهُ سَمِعَ النَّبِيَّ ﷺ يَقُولُ «لَبَّيْكَ بِعُمْرَةٍ وَحَجٍّ»  

[Machine] "I met Ibn Umar and informed him about Anas's statement that Allah's Messenger ﷺ accommodated both of them. Ibn Umar replied, 'He only accommodated them for the Hajj.' I then returned to Anas and informed him about Ibn Umar's statement. Anas responded, 'They consider us to be nothing more than children.'"  

«أَنَّ رَسُولَ اللَّهِ ﷺ أَهَلَّ بِهِمَا جَمِيعًا» فَلَقِيتُ ابْنَ عُمَرَ فَأَخْبَرْتُهُ بِقَوْلِ أَنَسٍ فَقَالَ «إِنَّمَا أَهَلَّ بِالْحَجِّ» فَرَجَعْتُ إِلَى أَنَسٍ فَأَخْبَرْتُهُ بِقَوْلِ ابْنِ عُمَرَ فَقَالَ مَا يَعُدُّونَنَا إِلَّا صِبْيَانًا