Volume 8 · Book 75 · Hadith 361
Narrated Qais: I came to Khabbab who had been branded with seven brands over his abdomen, and I heard him saying, "If the Prophet: had not forbidden us to invoke (Allah) for death, I would have invoked Allah for it."
— Sahih Bukhari, Volume 8, Book 75: Invocations, Hadith #361