ভূমিকা
Shiavault - a Vault of Shia Islamic Books Nahjul Balagha Part 2, Letters and Sayings Letter 9: To Mu`awiyah ومن كتاب له (عليه السلام) إلى معاوية Our people [^1] (the Quraysh) decided to kill our Prophet and to annihilate our root. They created worries for us, behaved with us harshly, denied us ease of life, exposed us to fear, forced us to take refuge in a rugged mountain and ignited for us the flames of war.
Those who accepted Islam from among the Quraysh were away from the distresses in which we were involved either because of a pledge that protected them or because of the tribe that would rise to support them. They were therefore safe from killing.
The way with the Prophet (may Allah bless him and his descendants) was that when fighting became fierce and people began to loose ground he would send forward members of his family and through them protect his companions from the attacks of swords and spears. In this way `Ubaydah ibn al-Harith was killed on the day of Badr, Hamzah (ibn `Abd al-Muttalib) on the day of Uhud and Ja'far (ibn Abi Talib) on the day of Mu'tah.