“Indeed, your Lord is in observation.”
Muhammad said: Ibn Mujahid mentioned that the recitation of Nafi‘ is (yasri) with a ya’ in the case of conjunction (wasl), and without a ya’ in the case of pausing (waqf).
﴿إِن رَبك لبالمرصاد﴾
قَالَ محمدٌ: ذكر ابْنُ مُجَاهِد أَنَّ قِرَاءَةَ نَافِعٍ (يَسْرِي) بِيَاءِ فِي الْوَصْل، وَبِغير يَاء فِي الْوَقْف.