ر ت لr-t-l
(س) رَتِلَ يَرْتَلُ رَتَلًاratila yartalu ratalan: for something to be well arranged and evenly spaced (رَتَلُ الْاَسْنَانratalu al-ʾasnān = for the teeth to be well set).
Form II (tafʿīl) رَتَّلَ يُرَتِّلُ تَرْتِيْلًاrattala yurattilu tartīlan: to recite slowly and deliberately, articulating the letters distinctly — hence the term "tartīl" in the science of tajwīd. Four times in the Quran, each time in Form II (tafʿīl): ﴿وَرَتِّلِ الْقُرْاٰنَ تَرْتِيْلًا﴾ (Al-Muzzammil 73:4); ﴿وَرَتَّلْنٰهُ تَرْتِيْلًا﴾ (Al-Furqān 25:32)