In order to create a good mentality associated with that lifestyle, Allah Subhanahu wa Ta'ala ordered humans to fulfill their needs dilakoni in a simple, middle, and not wasteful in spending. Allah Subhanahu wa Ta'ala said:
يا بني آدم خذوا زينتكم عند كل مسجد وكلوا واشربوا ولا تسرفوا إنه لا يحب المسرفين
O son of Adam, wear your beautiful garments in every (enter) the mosque, eat and drink, and do not overdo it. Allah does not love those who exaggerate. [al-A'râf / 7: 31].
ولا تسرفوا إنه لا يحب المسرفين
And do not overdo it. Allah does not love those who are excessive. [al-An'am / 6: 141].
Rasulullah sallallaahu 'alaihi wa sallam has also affirmed in his sabdanya, which means: "Eat, give alms, and use it in a state without wasting money and pride".
The Prophet sallallaahu 'alaihi wa sallam warned that a lavish life albeit with mubah goods could potentially drag people to waste. It can also indicate that the human being is not giving a proper appreciation of the treasures that are the favor of Allah, so he enters into the behavior of wasting possessions.
Rasulullah sallallaahu 'alaihi wa sallam said, which means: "Stay away from a lavish lifestyle. Verily, the servants of Allah are not those who are lavish. " See Shahîhah, 353.
In particular, this character is also a prominent criterion in ibâdur-rahmân self. That is the true servants of God. Allah says of them:
والذين إذا أنفقوا لم يسرفوا ولم يقتروا وكان بين ذلك قواما
And those who when they spend are not exaggerated, nor stingy, and are (the purchase) in the middle between such things. [al-Furqân / 25: 67].
They do not waste money with shopping outside of their needs. Nor are people greedy to his family, so the need for his family is fulfilled and not lacking. They spend their money fairly. And as good as business is the middle, not excessive or not miserly