Regarding the statement of Allah Almighty: "Indeed, We sent it down during a blessed night" (Surah Ad-Dukhan [44:3]), Ibrahim (may Allah have mercy on him) said: The Qur'an was sent down all at once to Gabriel (peace be upon him), then Gabriel (peace be upon him) would bring it to the Messenger of Allah (peace and blessings be upon him) afterwards.
Hadith Referenceسنن سعید بن منصور / كتاب التفسير / 78
Hadith Gradingمحدثین:الحديث سنده ضعيف لاختلاط خلف بن خليفة كما في ترجمته في الحديث [٧٦]