From Abu Salamah, from Jabir bin Abdullah about the statement of Allah, most High: Allah was pleased with the believers when they gave the pledge to you under the tree (48:18). that Jabir said: "We pledged to the Messenger of Allah ﷺ that we would not flee, and we did not pledge to him for death." [He said:] There are narration on this topic from Salamah bin Al-Akwa', Ibn 'Umar, 'Ubadah, and Jarir bin 'Abdullah.  

فِي قَوْلِهِ تَعَالَى (لَقَدْ رَضِيَ اللَّهُ عَنِ الْمُؤْمِنِينَ إِذْ يُبَايِعُونَكَ تَحْتَ الشَّجَرَةِ ) قَالَ جَابِرٌ بَايَعْنَا رَسُولَ اللَّهِ ﷺ عَلَى أَنْ لاَ نَفِرَّ وَلَمْ نُبَايِعْهُ عَلَى الْمَوْتِ قَالَ وَفِي الْبَابِ عَنْ سَلَمَةَ بْنِ الأَكْوَعِ وَابْنِ عُمَرَ وَعُبَادَةَ وَجَرِيرِ بْنِ عَبْدِ اللَّهِ  

"I said to Salamah bin Al-Akwa': "For what did you pledge to the Messenger of Allah ﷺ on the Day of Al-Hudaibiyyah?" He said: "For death." This Hadith is Hasan Sahih.  

قُلْتُ لِسَلَمَةَ بْنِ الأَكْوَعِ عَلَى أَىِّ شَيْءٍ بَايَعْتُمْ رَسُولَ اللَّهِ ﷺ يَوْمَ الْحُدَيْبِيَةِ قَالَ عَلَى الْمَوْتِ هَذَا حَدِيثٌ حَسَنٌ صَحِيحٌ  

"We used to pledge to the Messenger of Allah ﷺ to hear and obey." So he would say to us: "As much as you are able."  

كُنَّا نُبَايِعُ رَسُولَ اللَّهِ ﷺ عَلَى السَّمْعِ وَالطَّاعَةِ فَيَقُولُ لَنَا فِيمَا اسْتَطَعْتُمْ  

"We did not pledge to the Messenger of Allah ﷺ for death, but only that we would not flee."  

لَمْ نُبَايِعْ رَسُولَ اللَّهِ ﷺ عَلَى الْمَوْتِ إِنَّمَا بَايَعْنَاهُ عَلَى أَنْ لاَ نَفِرَّ