It is narrated from Sayyiduna Abdullah bin Abbas (may Allah be pleased with them) that Sayyidah Dubaa’ah bint Az-Zubair bin Abdul Muttalib (may Allah be pleased with them) came to the Messenger of Allah (peace and blessings be upon him) and said: O Messenger of Allah! I intend to perform Hajj, so how should I make the intention? He said: “Say like this: «لَبَّيْكَاَللّٰهُمَّلَبَّيْكَوَمَحِلِّىْحَيْثُتَحْبِسُنِيْ.» that is, Here I am, O Allah, here I am, and my place of removing Ihram is wherever You restrain me. In this way, the condition you have stipulated is upon your Lord.”
Hadith Referenceسنن دارمي / من كتاب المناسك / 1849