When the number of the believers increased in Madinah, Allah revealed to the Prophet, sallallahu ^alayhi wa sallam, to migrate to it. The Muslims started to migrate one after another in compliance to the order of the Prophet, sallallahu alayhi wa sallam.
The blasphemers of Quraysh were severely shocked by the speedy way the Religion of Islam was spreading and they wanted to find a way to eliminate it
The blasphemers of the tribe of Quraysh noticed the continuos migration of the Companions to Madinah. So, they feared that the Prophet would do the same and leave Makkah. They held a meeting in Dar an-Nadwah and submitted to the opinion of ^Amr Ibn Hisham(Abu Jahl) and collectively conspired to kill Prophet Muhammad, sallallahu ^alayhi wa sallam. In order to avoid revenge from the family of the Prophet, sallallahu ^alayhi wa sallam, they decided to spread his blooad among the tribes. So they schemed to have one man from every tribe strike the Prophet with their swords all at once, thus it would be hard to seek revenge from all the tribes. Angel Jibril peace be upon him descended and informed the Prophet about Quraysh's scheme of killing him and ordered him not to sleep in his regular sleeping place. Jibrel also conveyed to him Allah's permission to migrate. The Prophet ordered his cousin ^Aliyy Ibn Abi Talib to sleep in his place and to cover himself with the Prophet's green shawl and to return the belongings of the people which they had kept with the Prophet for safekeeping; ^Aliyy obeyed the order. By the time the blasphemers had already gathered at the Prophet's door.
Fully relying upon Allah the Exalted, the Messenger of Allah left his house with his hands full of soil and he sprinkled the soil over the heads of the conspirators while reciting verses from Surah Yasmin
This means: We have made before them a barrier and a barrier behind them, so We have cpver them over so they cannot see
Thus, Allah blocked His Prophet from their sight. In the morning they went into the Prophet's house to kill him but instead they found ^Aliyy sleeping in his place. They erupted in rage and fury out of humiliation and embarassment, especially when they found the soil on their heads. Angry, furious, and nervous the left the house seeking the trails of The Prophet