It wasnarrated from Anas that the Prophet (ﷺ) said:
"Labbaikabi-'Umratin wa hajjatin [Here I am (O Allah), for 'Umrah andHajj]." (IT)
English reference (IT): Vol. 4, Book 25, Hadith 2969 (IT)
Arabic reference (IT): Book 25, Hadith 3082 (IT)