Sayyiduna Zayd bin Khalid al-Juhani (may Allah be pleased with him) said: I heard the Messenger of Allah (peace and blessings be upon him) say: "Whoever receives a kindness from his brother, without asking for it and without greedily anticipating it, should accept it and not return it, for it is only provision that Allah has sent to him."
Hadith Referenceالمعجم الكبير للطبراني / باب الزاي / 5222