And because of it is stated:xviSee BT Berakhot 27b [‘the evening prayer is voluntary (reshut)’] ‘the prayer service of the morning is an obligation’, [which is ‘a private domain’] the evening prayer service is a domain (reshut), [of the public, which has no fixed-time] because it is the domain of the night, [Var. inclusive of] its own, and therefore, it has no fixed time at night, which is likened to exile, [which is ‘a public domain’, in which (Ps. 104:20)... every beast of the forest moves about – which are all the light of the world that enters it] but sometimes it is present there, and sometimes it is not present.