Sunan Abi Dawud 2760
سنن أبي داود#2760SahihNarrated AbuBakrah: The Prophet (ﷺ) said: If anyone kills a man whom he grants protection prematurely, Allah will forbid him to enter Paradise
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Al-AlbaniSahih
Muhammad Muhyi Al-Din Abdul HamidSahih
Zubair Ali ZaiIsnaad Sahih
In-book reference: 15:284