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