20:22
وَٱضْمُمْ يَدَكَ إِلَىٰ جَنَاحِكَ تَخْرُجْ بَيْضَآءَ مِنْ غَيْرِ سُوٓءٍ ءَايَةً أُخْرَىٰ
Wadmum yadaka ilaa janaahika takhruj baidaaa'a min ghairi sooo'in Aayatan ukhraa
And place your hand in your armpit, it will come forth shining white, without blemish. This is another Sign of Allah,
