Sad is an indirect Quranic name for boys that means “happiness”, “blessedness”. It is the name of many famous companions of the Prophet, peace and blessings of Allah upon him and his companions, such as Sad ibn Muadh, Sad bin Ubadah, Sad ibn Abi Waqqas. It is derived from the S-Ain-D root which is used in many places in the Quran.