The Hand of Musa turning White without any Disease

This is the second sign of Musa. That is Allah has commanded him to place his hand into the opening of his garment, as is clearly stated in another Ayah. It mentioned here merely as a passing reference, saying:

وَاضْمُمْ يَدَكَ إِلَى جَنَاحِكَ

وَاضْمُمْ يَدَكَ إِلَىٰ جَنَاحِكَ (And put your hand under your arm - 20:22). The word جَنَاحِ means fore-limb of an animal or wing of a bird. Here Sayyidna Musa (علیہ السلام) was commanded to press his hand under his armpit so that when he brings it out it will shine as brilliantly as the sun, and this will be the second miracle granted to him. This is the meaning given to the words by Sayyidna Ibn ` Abbas ؓ (Mazhari).