Musannaf Ibn Abi Shayba 33:781

Waki’ narrated to us, from Sufyan, from ‘Abd al-‘Aziz ibn Rufay’, from Qays ibn Sa’d, from ‘Ubayd ibn ‘Umayr, who said: "Indeed, the people of the graves meet the deceased just as the rider is met. They ask him, and when they ask him, 'What did so-and-so do, from those who have died?' he says, 'Did he not come to you?' They say, 'To Allah we belong and to Him we shall return. He was taken to his mother, the Abyss (al-Hawiyah).'"