س ر یs-r-y
(ض) سَرٰى يَسْرِيْ سُرًي وَسَرْيَةًsarā yasrī surany wa-saryatan: to travel by night; then also used of travelling in general. ﴿وَالَّيْلِ اِذَا يَسْرِ﴾ (Al-Fajr 89:4)
سَرِيٌّsariyy (adjective on the pattern of فَعِيْلٌfaʿīl): that which flows always and in every condition; then used for a stream. ﴿قَدْ جَعَلَ رَبُّكِ تَحْتَكِ سَرِيًّا﴾ (Maryam 19:24)
Form IV (ifʿāl) اَسْرٰى يُسْرِيْ اِسْرَاءًasrā yusrī isrāʾan: synonymous with the bare triliteral (thulāthī mujarrad); it becomes transitive with the preposition bi: to set out with someone; to take someone away. ﴿سُبْحٰنَ الَّذِيْٓ اَسْرٰى بِعَبْدِهِۦ لَيْلًا﴾ (Al-Isrāʾ 17:1); اَسْرِasri (imperative, amr): set out with, take away. ﴿فَاَسْرِ بِاَهْلِكَ﴾ (Hūd 11:81)