Sahih Bukhari
Sahih Bukhari Volume 003, Book 027, Hadith Number 005.
Hadith Section/Book: Sahih Bukhari Sahih Bukhari Book 27. Minor Pilgrimmage (Umrah)
Narated By 'Ursa bin Az-Zubair : I asked 'Aisha (whether the Prophet had performed 'Umra in Rajab). She replied, "Allah's Apostle never performed any 'Umra in Rajab."