Sad is an indirect Quranic name for boys that means āhappinessā, āblessednessā. It is the name of many famous companions of the Prophet, peace and blessings of Allah upon him and his companions, such asĀ 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.