Salé's patron saint, Sidi Abdallah Ibn Hassoun, was a 16th-century Sufi cleric and teacher. He's revered by Moroccan Muslims as a patron of travelers in much the same way as Catholics revere St Christopher. An annual candlelit pilgrimage and procession in his honor takes place on the evening of Mouloud (the Prophet's birthday), ending at this zawiya (Sufi shrine) behind the Grand Mosqée. Only Muslims may enter.

