Superiority of Auliya' and their Marvels Riyad as-Salihin 1510
Arabic hadith text
وعن ابن عمر رضي الله عنهما قال: ما سمعت عمر رضي الله عنه يقول لشيء قط: إني لأظنه كذا إلا كان كما يظن. ((رواه البخاري))
Translation
Ibn 'Umar (May Allah be pleased with them) reported
I never heard 'Umar (May Allah be pleased with him) relating anything that he conceived it to be so-and-so, but that it proved to be as he had conceived it."[Al-Bukhari].