ruled from 656 CE to 661 CE, [26] when he was assassinated. [33] while prostrating (sujud) in prayer. Shī‘as add "و عليٌ وليُّ الله" "and Ali is the wali (chosen one) of God" ( wa-‘Aliyun waliyu l-Lāh ), to the adhan and shahada but this is not obligatory. [34] Ali is