al-Shakūr (ALA-LC romanization of Arabic: الشكور) is one of the names of Allah.
In his book, "Al-Maqsad Al-Asna fi Sharah Asma' Allahu al-Husna" (aka The best means in explaining Allah's Beautiful Names), Imam Al Ghazali translates al-Shakūr as "The One Who Expresses Thankfulness by rewarding bounteously".
Muslims tend to quote verse 2:261 when mentioning Allah's Generosity and Gratefulness, "The likeness of those who spend their wealth in Allah's way is as the likeness of a grain which grows seven ears, in every ear a hundred grains.
"[2] To shed further light upon The Appreciative Attribute of Allah, one can refer to the upcoming traditions found in classical Islamic text.
Imam Muslim reports that Abu Hurairah related that Muhammad said: "Allah the Majestic and Exalted Said: 'Every deed of man will receive ten to 700 times rewards, except Siyam (fasting), for it is for Me and I shall reward it (as I Like).