[Machine] Urwah reported that Aisha said: "Indeed, Ibn Umar used to say: 'The Messenger of Allah ﷺ performed Umrah in the month of Rajab.'"  

دَخَلْتُ أَنَا وَعُرْوَةُ بْنُ الزُّبَيْرِ فَقَالَ عُرْوَةُ لِعَائِشَةَ إِنَّ ابْنَ عُمَرَ يَقُولُ «اعْتَمَرَ رَسُولُ اللهِ ﷺ فِي رَجَبٍ»  

I and Ibn 'Umar were reclining against the (wall) of the apartment of A'isha and we were listening to the sound produced by the brushing of her teeth. I said Abu Abd al-Rahman (the kunya of 'Abdullah b. Umar), did Allah's Apostle ﷺ perform 'Umra in the month of Rijab? He said: Yes. I said to 'A'isha: Mother, are you listening to what Abu Abd al-Rabman is saying? She said: What is he Saying? I said: He is saying that Allah's Apostle ﷺ performed 'Umra during the month of Rajab, whereupon she said: May Allah grant pardon to Abu Abd al-Rahman I By my life he (the Holy Prophet) did not perform 'Umra during the month of Rajab. And never was there an Umra performed by him (the Holy Prophet) in which he ('Abdullah b. 'Umar) did not join him. Ibn 'Umar heard this and said nothing to affirm It or to deny it, but kept quiet. (Using translation from Muslim 1254)  

كُنْتُ أَنَا وَابْنُ عُمَرَ مُسْتَنِدَيْنِ إِلَى حُجْرَةِ عَائِشَةَ إِنَّا لَنَسْمَعُ صَوْتَهَا بِالسِّوَاكِ تَسْتَنُّ فَقُلْتُ لَهُ يَا أَبَا عَبْدِ الرَّحْمَنِ «اعْتَمَرَ النَّبِيُّ ﷺ فِي رَجَبٍ؟» قَالَ نَعَمْ قُلْتُ لِعَائِشَةَ يَا أُمَّتَاهُ أَلَا تَسْمَعِينَ مَا يَقُولُ أَبُو عَبْدِ الرَّحْمَنِ؟ قَالَتْ وَمَا يَقُولُ؟ قُلْتُ يَقُولُ اعْتَمَرَ النَّبِيُّ ﷺ فِي رَجَبٍ قَالَتْ يَغْفِرُ اللهُ لِأَبِي عَبْدِ الرَّحْمَنِ لَعَمْرِي مَا اعْتَمَرَ فِي رَجَبٍ وَمَا اعْتَمَرَ مِنْ عُمْرَةٍ إِلَّا وَإِنَّهُ لَمَعَهُ وَابْنُ عُمَرَ يَسْمَعُ فَمَا قَالَ لَا وَلَا نَعَمْ وَسَكَتَ