Abu al-Fida (1273 – 1331 AD) was a Muslim geographer and historian. He relates that Prophet Muhammad suffered from a death erection. Ali ibn Abi Ṭalib, the fourth Rightly-guided Caliph of Islam (and also Muhammad's son-in-law and cousin) washed his body after his death, and had exclaimed, "O prophet, thy penis is erect unto the sky!"