From Hafiz ibn Hajar's expertise we know that the beginning of this important event took place at night in the house of Umm Hani - which is in the valley of Abu Talib - where the Prophet happened to be sleeping.
Mula kadalubhasaan Hafiz ibn Hajar ni alam namin na sa simula ng mahahalagang kaganapan kinuha lugar sa gabi sa bahay ni Umm Hani - na kung saan ay sa lambak ng Abu Talib - kung saan naganap ang Propeta na natutulog.