Giving Gifts In Islam

The Prophet ﷺ said: "Give gifts to one another, you will come to love one another." (Hasan.
In Bukhari's al-Adabul-Mufrad; declared hasan by al-Albani in al-Irwaa (1601)).

Fu'aad Ibn 'Abdul-'azeez ash-Shulhoob: "One of the ways of increasing love between brothers and of removing rancour from their hearts is for them to give gifts to one another." (The book of manners, p.429).

Zaid Ibn Al-Hubaab reported that he heard Sufyaan say, "All of the following are lawful things in this life: wealth that is earned through honest trade; an endowment that is given by a just ruler; a gift that is given out of love by a believing brother; or inheritance that is pure (and has not been mixed with unlawfully derived wealth). (The biography of Sufyaan Ath Thauree p.79).

The Prophet ﷺ said: "Shake hands, for this will dispel rancour (deep feeling of enmity), and exchange gifts and love one another, for this will dispel hatred." (Narrated by Malik in al-Muwatta’, 1413).