The fruits of Holy Communion
The Eucharist commits us to the poor. To receive in truth the Body and Blood of Christ given up for us, we must recognize Christ in the poorest, his brethren:
You have tasted the Blood of the Lord, yet you do not recognize your brother,.... You dishonor this table when you do not judge worthy of sharing your food someone judged worthy to take part in this meal.... God freed you from all your sins and invited you here, but you have not become more merciful.
Source: Catechism of the Catholic Church (Vatican.va)