It is narrated from Sayyiduna Ibn Umar (may Allah be pleased with them both) that a man came to the Prophet (peace and blessings be upon him) and said: O Messenger of Allah, who among people is most beloved to Allah? And which deed is most beloved to Allah? The Messenger of Allah (peace and blessings be upon him) said: "The most beloved of people to Allah Almighty is the one who is most beneficial to people, and the most beloved of deeds to Allah Almighty is a joy that you bring into the heart of a Muslim, or that you remove some hardship from him, or pay off a debt for him, or drive away his hunger. And for me to walk with my brother in some need of his is more beloved to me than to observe i'tikaf in this mosque, meaning the Mosque of Madinah, for a month. Whoever restrains his anger, Allah will conceal his faults; and whoever swallows his rage, though he could have carried it out had he wished, Allah will fill his heart with hope on the Day of Resurrection; and whoever walks with his brother in some need of his until it is fulfilled, Allah will make his feet firm on the Day when feet will slip."
Hadith Referenceالمعجم الكبير للطبراني / باب العين / 13589