 Customs vary regarding singing the song on the Shabbat, but all communities, Sephardi and Ashkenazi alike, sing it on Lag BaOmer, the Yom Hillula of Shimon bar Yochai.Lavi's tomb in Tripoli was visited by Jewish pilgrims from throughout Libya both during the year and on his Yom Hillula.The tomb was also venerated by Muslims, who called him "Ibn Limam".