´It was narrated from Abu Hurairah that:` The Messenger of Allah (ﷺ) said: "People should certainly stop lifting their gaze to the sky when they supplicate during the prayer, or they will lose their eyesight."
Hadith ReferenceSunan an-Nasa'i / The Book of Forgetfulness (In Prayer) / Hadith: 1277
Hadith Gradingالألبانی:صحيح | زبیر علی زئی:صحيح مسلم