Allah the Exalted and Most Honored honors, regards and praises His Messenger by saying,

﴿إِنَّ الَّذِينَ يُبَايِعُونَكَ إِنَّمَا يُبَايِعُونَ اللَّهَ﴾

(Verily, those who give pledge to you, they are giving pledge to Allah.) Allah the Exalted and Most High said in another Ayah,

﴿مَّنْ يُطِعِ الرَّسُولَ فَقَدْ أَطَاعَ اللَّهَ﴾

(He who obeys the Messenger, has indeed obeyed Allah.) (4:80) Allah said, next,

﴿يَدُ اللَّهِ فَوْقَ أَيْدِيهِمْ﴾

(The Hand of Allah is over their hands.) meaning, He is with them, hearing their statements and witnessing their stand, having full knowledge of them inwardly and outwardly. Therefore, Allah the Exalted was indeed taking the pledge from them through His Messenger ,

﴿إِنَّ اللَّهَ اشْتَرَى مِنَ الْمُؤْمِنِينَ أَنفُسَهُمْ وَأَمْوَلَهُمْ بِأَنَّ لَهُمُ الّجَنَّةَ يُقَـتِلُونَ فِى سَبِيلِ اللَّهِ فَيَقْتُلُونَ وَيُقْتَلُونَ وَعْدًا عَلَيْهِ حَقًّا فِي التَّوْرَاةِ وَالإِنجِيلِ وَالْقُرْءانِ وَمَنْ أَوْفَى بِعَهْدِهِ مِنَ اللَّهِ فَاسْتَبْشِرُواْ بِبَيْعِكُمُ الَّذِى بَايَعْتُمْ بِهِ وَذَلِكَ هُوَ الْفَوْزُ الْعَظِيمُ ﴾

(Verily, Allah has purchased of the believers their lives and their properties for which theirs shall be the Paradise. They fight in Allah's cause, so they kill and are killed. It is a promise in truth, binding on Him in the Tawrah and the Injil and the Qur'an. And who is truer to his covenant than Allah Then rejoice in the bargain you have concluded. That is the supreme success.)(9:111) Allah said,

﴿وَمَنْ أَوْفَى بِمَا عَـهَدَ عَلَيْهِ اللَّهَ فَسَيُؤْتِيهِ أَجْراً عَظِيماً﴾

(...and whosoever fulfills what the covenants he makes with Allah, He will bestow on him a great reward.) a generous reward. The pledge mentioned here is the pledge of Ar-Ridwan which was pledged under a tree, a Samurah, in the area of Al-Hudaybiyyah. The number of the Companions who gave their pledge to Allah's Messenger at that time was either 1,300, 1,400 or 1,500. However, 1,400 is the better choice.