None can make Anything Lawful or Unlawful except Allah or Those Whom Allah has allowed to do so

Ibn `Abbas, Mujahid, Ad-Dahhak, Qatadah, `Abdur-Rahman bin Zayd bin Aslam and others said: "This Ayah was revealed to criticize the idolators for what they used to make lawful and unlawful. Like the Bahirah, Sa'ibah and Wasilah." As Allah said:

وَجَعَلُواْ لِلَّهِ مِمَّا ذَرَأَ مِنَ الْحَرْثِ وَالاٌّنْعَامِ نَصِيباً

4\. MERCY as in وَرَ‌حْمَةٌ (and mercy for the believers).

In the second verse (58), it was said: قُلْ بِفَضْلِ اللَّـهِ وَبِرَ‌حْمَتِهِ فَبِذَٰلِكَ فَلْيَفْرَ‌حُوا هُوَ خَيْرٌ‌ مِّمَّا يَجْمَعُونَ ﴿58﴾ (Say, "With the grace of Allah and with His mercy" - in these they should rejoice. It is far better than what they accumulate). The sense of the verse is that people should take only the grace and mercy of Allah Ta` ala as the real thing to be delighted about and be pleased with it. As for the short-lived worldly wealth, possession, comfort and recognition, these are things not worth being happy about in the real sense. Because, to start with, no matter how much one has, it turns out to be not as much as one would have wished. It becomes a cycle that never ends. Then, there is that ever-lurking danger that it may start declining any time. Therefore, at the end of the verse, it was said: هُوَ خَيْرٌ‌ مِّمَّا يَجْمَعُونَ (It is far better than what they accumulate). Thus, the core of the meaning is that the grace and mercy of Allah is far better than the layers upon layers of wealth and property and worldly recognition and power one accumulates as the sum-total of one's entire life.