Allah has already forgiven the Prophet and the Muhajireen and the Ansar (9:117)

﴿لَّقَد تَّابَ اللَّهُ عَلَى النَّبِيِّ وَالْمُهَاجِرِينَ وَالْأَنصَارِ الَّذِينَ اتَّبَعُوهُ فِي سَاعَةِ الْعُسْرَةِ مِن بَعْدِ مَا كَادَ يَزِيغُ قُلُوبُ فَرِيقٍ مِّنْهُمْ ثُمَّ تَابَ عَلَيْهِمْ ۚ إِنَّهُ بِهِمْ رَءُوفٌ رَّحِيمٌ﴾
[ التوبة: 117]

9:117 Allah has already forgiven the Prophet and the Muhajireen and the Ansar who followed him in the hour of difficulty after the hearts of a party of them had almost inclined [to doubt], and then He forgave them. Indeed, He was to them Kind and Merciful.

Allah has forgiven the Prophet Muhammad ( peace be upon him ) since he gave permission to the hypocrites to stay behind from the battle of Tabūk.
He has also forgiven the Emigrants and the Helpers who did not stay behind, but followed him in the battle of Tabūk despite the intense heat, the lack of means and the powerful strength of the enemy.
This was after a group of them who intended to abandon the expedition, almost deviated from the truth and the path of correct guidance, because of the great difficulty they faced.
Then Allah enabled them to be patient and to go out for that battle.
He forgave them, for He, may He be glorified, is Kind and Merciful towards them.
It was because of His mercy that He enabled them to repent to Him and that He accepted their repentance.

Allah has forgiven the Prophet (SAW), the Muhajirun (Muslim emigrants who left their homes and came to Al-Madinah) and the Ansar (Muslims of Al-Madinah) who followed him (Muhammad SAW) in the time of distress (Tabuk expedition, etc.), after the hearts of a party of them had nearly deviated (from the Right Path), but He accepted their repentance. Certainly, He is unto them full of Kindness, Most Merciful.

phonetic Transliteration

Laqad taba Allahu AAala alnnabiyyi waalmuhajireena waalansari allatheena ittabaAAoohu fee saAAati alAAusrati min baAAdi ma kada yazeeghu quloobu fareeqin minhum thumma taba AAalayhim innahu bihim raoofun raheemun

Abdullah Yusuf Ali - Translation

Allah turned with favour to the Prophet, the Muhajirs, and the Ansar,- who followed him in a time of distress, after that the hearts of a part of them had nearly swerved (from duty); but He turned to them (also): for He is unto them Most Kind, Most Merciful.

Safi-ur-Rahman al-Mubarakpuri

Allah has forgiven the Prophet, the Muhajirin and the Ansar who followed him in the time of distress (Tabuk expedition), after the hearts of a party of them had nearly deviated (from the right path), but He accepted their repentance. Certainly, He is unto them full of kindness, Most Merciful.

Page 205 English transliteration