Narrated `Abdullah
The Prophet (ﷺ) said, "The cases which will be decided first (on the Day of Resurrection) will be the cases of blood-shedding. "
Narrated Abu Huraira
Allah's Messenger (ﷺ) said, "Whoever has wronged his brother, should ask for his pardon (before his death), as (in the Hereafter) there will be neither a Dinar nor a Dirham. (He should secure pardon in this life) before some of his good deeds are taken and paid to his brother, or, if he has done no good deeds, some of the bad deeds of his brother are taken to be loaded on him (in the Hereafter).
Narrated Abu Sa`id Al-Khudri
Allah's Messenger (ﷺ) said, "The believers, after being saved from the (Hell) Fire, will be stopped at a bridge between Paradise and Hell and mutual retaliation will be established among them regarding wrongs they have committed in the world against one another. After they are cleansed and purified (through the retaliation), they will be admitted into Paradise; and by Him in Whose Hand Muhammad's soul is, everyone of them will know his dwelling in Paradise better than he knew his dwelling in this world."