There is no blame on the prophet in doing anything that God has decreed upon him. Such was God's sunna with the people of old. God's command is a determined duty.
Translation endnotes
[33:38] When the Quran uses the word hadith (word; saying; narration) for something other than itself, it usually uses it in negative way or context (7:185; 12:111; 31:6; 33:53; 45:6; 52:34; 66:3; 77:50). Since God knew that that Sunni and Shiite mushriks would create other authorities besides God in their religion and call them hadith and sunna of prophet Muhammed, the Quran uses the word sunna (law) in conjunction with God, as in Sunnatullah (God's law), which depicts the social, political and echological consequences for rejecting God's message (33:38,62; 35:43; 40:85; 48:23; 8:38; 15:13; 17:77; 18:55; 3:137; 4:26). There is only one valid sunna (law, way) and it is God's sunna. Those who follow Muhammed's sunna or, more accurately, a man-made sunna falsely attributed to him, will be convicted to the sunna mentioned in 35:43. The singular word sunna is never used for other than God to denote a positive path; but its plural, sunan, is used once in a positive sense in connection to previous generations (4:26). More interesting, the third fabricated religious authority or idol is called ijma (consensus) and whenever this word or its derivatives are used in the Quran for other than God, they are always negative (20:60; 70:18; 104:2; 3:173; 3:157; 10:58; 43:32; 26:38; 12:15; 10:71; 20:64; 17:88; 22:73; 54:45; 28:78; 7:48; 26:39; 26:56; 54:44…). The same is true for the fourth word sharia (law) (42:21). The same is true for the word salaf (43:56) and for the word ashab (53:2). Are all of these a coincidence? Since the followers of hadith and sunna do not translate these words, to expose the nature of their teachings we preferred not to translate some of those words too. This would not only expose their evil scheme, but would also highlight one of the prophetic features of the Quran. Faced with these prophetic Quranic challenges, later Sunni and Shiite scholars tried to hijack one of the attributes of the Quran, hikma (wisdom) or hakim (wise), for their hadiths; but they failed. The abundance of nonsense in hadith books did not accept or deserve such a description; they could not market donkey's braying as music, except to the deaf; they could not portray camels as penguins, except to the blind. See 6:112- 116; 17:39; 36:1; 39:18; 53:2; 66:3. Also, see 49:1.