Musnad Ahmad 1153:1453

'Abd al-Rahman narrated to us, and Abu 'Amir narrated to us, they said: Zuhayr ibn Muhammad narrated to us, from Sharik ibn Abi Namir, from 'Ata' ibn Yasar, that 'Aisha said: The Messenger of Allah (peace and blessings of Allah be upon him) used to go out when it was 'Aisha's night, when two-thirds of the night had passed, to al-Baqi'. He would say: "Peace be upon you, O abode of a believing people. We and you, and what you are promised for tomorrow, are deferred." Abu 'Amir said: "You are deferred." "And we, if Allah wills, will join you."