It is narrated from Sayyiduna Abu Musa (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) said: A believer to another believer is like a building, each part strengthening the other. And the example of a good companion is like that of a perfume seller: even if he does not give you any perfume, its fragrance will still reach you. And the example of a bad companion is like that of a blacksmith’s bellows: even if it does not burn you, its sparks will surely fall upon you. And the trustworthy treasurer is also among those who give charity, who, with the intention of reward, gives whatever he is commanded to give.