Muqtada As-Sadr

In Khalil Dulaymi's lousy book on Saddam (he was his lawyer), there is a reprint of a letter allegedly written by Muqtada As-Sadr and published in Iraqi newspaper in which As-Sadr's family thanked Saddam for his condolences upon the death of Grand Ayatullah Muhammad Sadiq As-Sadr. Anyone know anything about its authenticity?