Mujash reported,

I came to the Prophet ﷺ with my brother after the Conquest and said, "Messenger of Allah, I have brought my brother to you so that you may take his pledge for emigration."He replied, "The people of emigration have already secured what it offered."I asked, "Then for what will you take his pledge?"He said, "I will take his pledge for Islam, faith, and jihad."I later met Mabad, who was the elder of the two, and asked him about it, and he said, "Mujash spoke the truth."

Bukhari 4305-4306

Sahih

حدثنا عمرو بن خالد حدثنا زهير حدثنا عاصم عن أبي عثمان قال حدثني

مجاشع قال

أتيت النبي ﷺ بأخي بعد الفتح قلت يا رسول الله جئتك بأخي لتبايعه على الهجرة قال ذهب أهل الهجرة بما فيها فقلت على أي شيء تبايعه قال أبايعه على الإسلام والإيمان والجهاد فلقيت معبدا بعد وكان أكبرهما فسألته فقال صدق مجاشع

البخاري 4305-4306صحيح
Contents
Reference
Commentary
Ayat
Collection
Sahih Bukhari
Book
Expeditions
Chapter
Prophet's ﷺ stay in Makkah at the time of the conquest
Numbering
Darussalam 4305-4306
Bukhari4305 4305-4306