Musnad Ahmad 430:15

Sulayman ibn Harb narrated to us, he said: Hammad ibn Salamah narrated to us, from Sa’id al-Jurayri, from Abu Na’amah, that ‘Abdullah ibn Mughaffal heard a son of his saying: "O Allah, I ask You for the white palace in Paradise, if I enter it, to be on my right." He said: So he said to him: "O my son, ask Allah for Paradise and seek refuge in Him from the Fire, for I heard the Messenger of Allah, peace and blessings of Allah be upon him, say: 'There will be people after me from this nation who will transgress in supplication and in purification.'"