After he had fasted for 40 days and nights and “felt hungry. ” Satan is able to perceive when we are weak and more likely to succumb to temptation.
١٧ لِمَاذَا مِنْ غَيْرِ ٱلْحِكْمَةِ أَنْ نَنْتَظِرَ حَتَّى نَرَى أُمُورًا بَاطِلَةً لِنُقَرِّرَ مَا سَنَفْعَلُهُ ؟‏