صحیح ابن حبان
Ibn Hibban
كتاب الصلاة
Book of Prayer
فصل في قيام الليل - ذكر البيان بأن هذا الأمر أمر به الناعس في صلاته وإن لم يكن النوم غلب عليه
Section on night prayer – clarification that this instruction applies to one who is drowsy in prayer, even if not fully overcome by sleep
1 hadith
Hadith 2584
Sayyida Aisha Siddiqa (may Allah be pleased with her) narrates: The Prophet Muhammad (peace and blessings be upon him) said: "When a person becomes drowsy during prayer, he should end the prayer, because it is possible that he thinks he is supplicating for himself during the prayer, but in reality, he may be supplicating for harm for himself and he does not even realize it."