The Prophet (saws) said : “Whoever has done wrong to his brother, whether it be the matter of honour or of money, let him put it right today, before he is overtaken by a Day on which there will be no dinar or dirham, but any good deeds he has to his credit may be taken and given in compensation to the one he has wronged, and if he has no good deeds to his credit, his victim’s sins may be taken and added to his own burden instead.” (Reported by al-Bukhaari).
Know that Allaah will never cause the reward of anyone who does a good deed to be lost, and al-qard al-hasan (a goodly loan lent for the sake of Allaah) is the best type of deed that will bring a person closer to Allaah.
Know that nothing is lost with Allaah, and that you will get back what you have lost in this world. You will receive hasanaat (good deeds) on the Day of Resurrection when people will be most in need of hasanaat. And Allaah is the source of strength.
But if a person is in difficulty and has no money, it is better to give him more time and treat him with kindness. Allaah says (interpretation of the meaning):
“And if the debtor is in a hard time (has no money), then grant him time till it is easy for him to repay…” [al-Baqarah 2:280].
Islam teaches us that the strongest of servants are those who not only have the strength to suppress their anger when they are tested but also possess an immeasurable capacity to forgive.
So be patient, or if does not intend to pay then alert authorities.
The Prophet ﷺ said that: “Whoever suffers an injury and forgives (the person responsible), God will raise his status to a higher degree and remove one of his sins” (Al-Tirmidhi). If we can sincerely forgive those who anger us or wrong us,, inwardly and outwardly, then that cleanses our souls from the shaytan (satan) and his negative energy.
So hiring someone to hurt another being is clearly haram
Having good manners and not hurting others was the hallmark of the best of creation (Allah bless him & give him peace) and his companions (Allah be pleased with them all). There
- Abu Musa said, "I said, 'Messenger of Allah, whose Islam is best?' He said, 'The one from whose tongue and hands the Muslims are safe.'" [Agreed upon]