Translation:

51. And if We (but) send a Wind from which they see (their tilth) turn yellow behold they become thereafter ungrateful (Unbelievers)!

Notes (Tafseer)

3569. Another Parable from the forces of nature. We saw how the Winds gladdened, vivified, and enriched those who utilized them in the right spirit. But a wind might be destructive to tilth in certain circumstances: so the blessings of Allah may-by the wrongdoers resisting and blaspheming-bring punishment to the wrong-doers. Instead of taking the punishment in the right spirit-in the spirit in which Believers of Allah take their misfortunes,-the Unbelievers curse and deepen their sin!