ترجمة الآية 11 من سورة Al-Anfal - English - سورة الأنفال : عدد الآيات 75 - - الصفحة 178 - الجزء 9.
(Remember) when He covered you with a slumber as a security from Him, and He caused water (rain) to descend on you from the sky, to clean you thereby and to remove from you the Rijz (whispering, evil-suggestions, etc.) of Shaitan (Satan), and to strengthen your hearts, and make your feet firm thereby.
[Remember] when He overwhelmed you with drowsiness [giving] security from Him and sent down upon you from the sky, rain by which to purify you and remove from you the evil [suggestions] of Satan and to make steadfast your hearts and plant firmly thereby your feet.
(8:11) And recall when Allah brought on you drowsiness, *8 giving you a feeling of peace and security from Him, and He sent down rain upon you from the sky that He might cleanse you through it and take away from you the pollution of Satan and strengthen your hearts, and steady your feet through it. *9
*8). In the Battle of Uhud the Muslims passed through a similar experience (see Al'lmran 3: 154 above). On both occasions, when prevalent conditions should have produced intense fear and panic among them, God filled their hearts with such peace and tranquillity that they were overpowered with drowsiness.
*9). This refers to the heavy downpour on the night preceding the Battle of Badr. It helped the Muslims in three ways. First, it provided them with an abundant water supply which they quickly stored in large reservoirs. Second, rain compacted the loose sand in the upper part of the valley where the Muslims had pitched their tents. This helped the Muslims plant their feet firmly and facilitated their movement. Third, where the Quray'sh army was stationed in the lower part of the valley, the ground turned marshy.
The defilement caused by Satan which occurs in the verse refers to the fear and panic which initially, afflicted the Muslims.
المصدر : English translation surah Al-Anfal Verse 11 Page 262