When did the event of the social boycott of Banu Hashim take place?

The social boycott of Banu Hashim began in the 7th year of Nabvi. It was a difficult time for the family of the Holy Prophet (SAW), as the Quraysh of Makkah decided to cut off all social and economic ties with Banu Hashim and Banu Abdul Muttalib. This cruel boycott forced them to live in a narrow valley called Shaib Abi Talib. The boycott lasted for about three years. During this time, food and supplies were very limited, and the companions had to suffer great hardships. This event tested the faith and patience of the early Muslims.