Is not claiming one's right due to weakness considered a form of suppressing anger?

Praise for suppressing anger is due when it is an act of seeking closeness to Allah. This is achieved by linking the suppression of anger with al-ḥisbah—meaning, abandoning the desire for revenge for the sake of Allah, despite having the power to exact it. Suppressing anger means restraining it and not showing it, even with the ability to harm the opponent.

As for one who suppresses anger due to an inability to exact revenge, this does not benefit them; rather, it may harm them and turn into resentment. The Prophetic Sunnah has clarified that praiseworthy suppression of anger is that which occurs despite having the power to act on it, and with the intention of seeking the countenance of Allah. Examples of this include:

"Whoever suppresses anger while he is able to act upon it, Allah, the Mighty and Majestic, will call him on the Day of Resurrection before all of creation until Allah allows him to choose from the wide-eyed houris whatever he wishes." "Whoever suppresses his anger, though he wished to act upon it, Allah will fill his heart with hope on the Day of Resurrection." "There is no gulp more beloved to Allah than a gulp of anger that a servant suppresses, seeking the countenance of Allah."

Therefore, the greatness and reward in suppressing anger are achieved when one has the ability to take revenge and restrains their wrath solely for the sake of Allah.