He reported Allah's Messenger ﷺ as saying, “Allah has a hundred, mercies of which He has sent down one among jinn and men, animals and creeping things. By it they are kind to one another, by it they show mercy to one another, and by it the wild beast is kind to its young. But Allah has kept back ninety-nine mercies by which He will show mercy to His servants on the day of resurrection.” (Bukhari and Muslim). A version by Muslim from Salman has something similar, at the end of which he said, “When the day of resurrection comes He will complete them with this one.”