صحیح ابن حبان
Ibn Hibban
كتاب الصلاة
Book of Prayer
باب ما يكره للمصلي وما لا يكره - ذكر الزجر عن رفع المصلي بصره إلى السماء مخافة أن يلتمع بصره
Chapter on What is Disliked and Not Disliked – Prohibition of Looking Up to the Sky in Prayer for Fear of Losing Sight
2 hadith
Hadith 2281
Sayyiduna Abdullah bin Umar (may Allah be pleased with them both) narrates this statement of the Prophet (peace and blessings be upon him): "Do not raise your gaze towards the sky during prayer, lest it be taken away." The narrator says: That is, do not do this during prayer.
Hadith 2282
Sayyiduna Abu Hurairah (may Allah be pleased with him) narrates: The Prophet Muhammad (peace and blessings be upon him) said: "Does the person who raises his head before the Imam (from bowing or prostration) not fear that Allah may turn his head into that of a donkey?"