Assalamualaikum....
- Sustenance Guaranteed By Allah SWT Every human being who is born into the world has their own sustenance. Even in Surah Hud verse 6 it says that Allah SWT guarantee sustenance for every creature. As his saying, No animal (including man) moves on this earth which is not guaranteed by God's sustenance. (Surah Hud: 6)
- The effort made by Allah SWT will provide sustenance for his servants in accordance with what he did.Sehingga if he is earnest and work hard, then the sustenance will get in accordance with the results of his efforts tersebut.Bila he lazy, then his sustenance will be lazy to menghinyainya.Sebagaimana Word of Allah in Surah an-Najm verse 59 that, And that man only get what he has cultivated.
- For the Grateful One A person who always grateful for every blessings that Allah Almighty gives, then Allah will also add sustenance.So vice versa, if he can not or can not be grateful, then Allah Ta'ala will give a heavy doom for him in the Hereafter. As explained in verse 7 of Sura Ibrahim, Allah Almighty says that, "If ye are grateful, I will add (favor) to you, but if ye deny (My favor), then My punishment is very severe .
- For the Believers and Trustful For those who believe, Allah SWT will provide sustenance for himself from the unexpected direction. Then for those who put their trust, then Allah Almighty will fulfill their needs. This is in accordance with the word of Allah SWT in verse 2-3, which states that "... whoever is devoted to Allah will undoubtedly establish for him a way out. And give him sustenance from unpredictable direction. And whoever put his trust in Allah will suffer (necessity). Indeed Allah carries out the affairs (the will). Allah has provision for every thing.
Wassalam....