In The Name of Allaah, The Most Merciful, The Bestower of Mercy.

Allaah (The Most High) said:

لَيۡسَ لَكَ مِنَ ٱلۡأَمۡرِ شَىۡءٌ أَوۡ يَتُوبَ عَلَيۡہِمۡ أَوۡ يُعَذِّبَهُمۡ فَإِنَّهُمۡ ظَـٰلِمُونَ

”Not for you (O Muhammad), but for Allah) is the decision; whether He turns in mercy to (pardons) them or punishes them; verily, they are the Zalimun (polytheists, disobedients, and wrong-doers, etc.) [3:128]

Narrated Sahl (radiyallaahu-anhu) that he was asked about the wound of the Prophet on the day (of the battle) of Uhud. He said, “The face of the Prophet was wounded and one of his front teeth was broken and the helmet over his head was smashed. Fatima washed off the blood while all held water. When she saw that bleeding was increasing, she burnt a mat (of date-palm leaves) till it turned into ashes and she filled the wound with those ashes and thus the bleeding ceased”. [Saahih Bukhaari. Vol 4. Number: 2911]

It is reported in the Saheeh that one of the Prophet’s teeth was broken and his head was injured (during the battle of Uhud), so he began to wipe the blood away from it, saying: How can a people be successful who cut the face of their Prophet and break his teeth, whilst supplicating to Allaah. So Allaah (The Mighty and Majestic) revealed the Ayah:

[لَيۡسَ لَكَ مِنَ ٱلۡأَمۡرِ شَىۡءٌ-Not for you (O Muhammad), but for Allah) is the decision] [Source: Zaad Al-Ma-aad 3/205-206]