In The Name of Allaah, The Most Merciful, The Bestower of Mercy.
Allaah [The Most High] said:
مَّا يَفۡتَحِ ٱللَّهُ لِلنَّاسِ مِن رَّحۡمَةٍ۬ فَلَا مُمۡسِكَ لَهَاۖ وَمَا يُمۡسِكۡ فَلَا مُرۡسِلَ لَهُ ۥ مِنۢ بَعۡدِهِۚۦ وَهُوَ ٱلۡعَزِيزُ ٱلۡحَكِيمُ
Whatever of mercy Allaah may grant to mankind, none can withhold it, and whatever He may withhold, none can grant it thereafter. And He is the All-Mighty, the All-Wise. [Soorah Al-Faatir’ Ayah 2]
[مَّا يَفۡتَحِ ٱللَّهُ لِلنَّاسِ مِن رَّحۡمَةٍ۬ – Whatever of mercy Allaah may grant to mankind]- Meaning: the good things of this worldly life and provision; [فَلَا مُمۡسِكَ لَهَاۖ- none can withhold it]. This Aayah notifies us of the fact that none has the right to be worshipped except Allaah, because there is neither anyone who can withhold what Allaah wants to grant [mankind] nor is there anyone who can grant what Allaah wants to withhold from [mankind].
[An Excerpt from ‘Zaadul Maseer Fee Ilmit Tafseer’ by Imaam Ibnul Jawzi (rahimahullaah). slightly paraphrased]