A man whose face was covered with an iron mask (i.e. clad in armor) came to the Prophet (ﷺ) and said, "O Allah's Messenger (ﷺ)! Shall I fight or embrace Islam first? "The Prophet (ﷺ) said, "Embrace Islam first and then fight." So he embraced Islam, and was martyred. Allah's Messenger (ﷺ) said, A Little work, but a great reward. "(He did very little (after embracing Islam), but he will be rewarded in abundance).
Sahih al-Bukhari Book 56, Hadith 24
← Previous Hadith Zaid bin Thabit said, "When the Qur'an was compiled from various written manuscripts, one of the Verses of Surat Al-Ahzab was missing which I used to hear Allah's Messenger (ﷺ) reciting. I could not find it except with Khuza`ima bin Thabjt Al-Ansari, whose witness Allah's Messenger (ﷺ) regarded as equal to the witness of two men. And the Verse was:-- "Among the believers are men who have been true to what they covenanted with Allah." (33.23)

Sahih al-Bukhari Book 56, Hadith 23 Next Hadith → Um Ar-Rubai'bint Al-Bara', the mother of Hartha bin Suraqa came to the Prophet (ﷺ) and said, "O Allah's Prophet! Will you tell me about Hartha?" Hartha has been killed (i.e. martyred) on the day of Badr with an arrow thrown by an unidentified person. She added, "If he is in Paradise, I will be patient; otherwise, I will weep bitterly for him." He said, "O mother of Hartha! There are Gardens in Paradise and your son got the Firdausal-ala (i.e. the best place in Paradise).

Sahih al-Bukhari Book 56, Hadith 25