Sahih Bukhari

Narrated `Amr:Ibn `Umar said, ""By Allah, I have not put a brick over a brick (i.e. constructed a building) or planted any date-palm tree since the death of the Prophet."" Sufyan (the sub narrator) said, ""I told this narration (of Ibn `Umar) to one of his (Ibn `Umar's) relatives, and he said, 'By Allah, he did build (something.' ""Sufyan added, ""I said, 'He must have said (the above narration) before he built