51وَلَئِن أَرسَلنا ريحًا فَرَأَوهُ مُصفَرًّا لَظَلّوا مِن بَعدِهِ يَكفُرونَMuhammad AsadBut thus it is: if1 We send a wind [that scorches their land], and they see it turn yellow, they begin, after that [erstwhile joy], to deny the truth [of Our almightiness and grace]!2The particle la'in (lit., "indeed, if ...") is often used in the Qur'an to express the recurrent, typical character of the attitude or situation referred to in the sequence; in all such cases it may be suitably rendered as "thus it is: if ...", etc.For a full explanation of this verse, see 11:9 and the corresponding notes 16-19.