Does supplicating with raised hands differ from supplicating wholeheartedly or without raising the hands, and is it necessary to raise the hands when supplicating?

Raising the hands during supplication (Du'a) is a Sunnah, not an obligation. It is one of the means by which supplications are answered, and it is better than supplicating verbally without raising the hands. Some scholars have considered it recommended to raise the hands during supplication, except in instances where it has been established that the Prophet (peace be upon him) did not raise them, such as during the Du'a in the Friday sermon, where raising them is disliked due to its contravention of the Sunnah.