Labayk, Allahumma labayk, la sharika laka labayk. Inna'l-hamda wa'n-nimata laka wa'l-mulk, la sharika lak.
Malik said that Abdullah ibn Umar used to add, "I am at Your service, I am at Your service. I am at Your service and at Your call. Good is in Your hands, and I am at Your service. Our desire is for You, and our action ."
Labayk, labayk, labayk wa sadayka wa'l-khayr biyadayka labayk wa'r-raghba'u ilayka wa'l-amalu.
Arabic : Book 20, Hadith 736