He certainly saw of the greatest signs of his Lord.
Tafseer
{ لقد رأى } فيها { من آيات ربه الكبرى } العظام، أي بعضها فرأى من عجائب الملكوت رفرفا أخضر سد أفق السماء وجبريل له ستمائة جناح .
{He saw} in it {of the greatest signs of his Lord} the great ones, that is, some of them. So he saw among the wonders of the kingdom a green flap that filled the horizon of the sky and Gabriel who had six hundred wings.