(1) باب مَا جَاءَ فِي التَّمَنِّي وَمَنْ تَمَنَّى الشَّهَادَةَ
Narrated Al-A'raj:
Abu Huraira said, Allah's Messenger (ﷺ) said, "By Him in Whose Hand my life is, I would love to fight in Allah's Cause and then get martyred and then resurrected (come to life) and then get martyred and then resurrected (come to life) and then get martyred, and then resurrected (come to life) and then get martyred and then resurrected (come to life)." Abu Huraira used to repeat those words three times and I testify to it with Allah's Oath.
Reference: Sahih al-Bukhari 7227
In-book reference: Book 94, Hadith 2
USC-MSA web (English) reference(deprecated numbering scheme): Vol. 9, Book 90, Hadith 333