There was a blind man during the time of the Messenger of Allah said: "I bear witness that her blood is permissible."
Sunan an-Nasa'i Book 37, Hadith 105
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"Whoever disbelieved in Allah after his belief, except him who is forced thereto and whose heart is at rest with Faith; but such as open their breasts to disbelief, on them is wrath from Allah, and theirs will be a great torment." "This was abrogated, and an exception was made, as Allah said: "Then, verily, your Lord for those who emigrated after they had been put to trials and thereafter strove hard and fought (for the Cause of Allah) and were patient, verily, your Lord afterward is, Oft-Forgiving, Most Merciful." This was 'Abdullah bin Sa'd bin Abi As-Sarh who was the governor of Egypt and used to write to the Messenger of Allah granted him protection."
Sunan an-Nasa'i Book 37, Hadith 104 Next Hadith → "A man spoke harshly to Abu Bakr As-Siddiq, and I said: 'Shall I kill him?' He told me off, and said: 'That is not for anyone after the Messenger of Allah .'"
Sunan an-Nasa'i Book 37, Hadith 106
Sunan an-Nasa'i Book 37, Hadith 104 Next Hadith → "A man spoke harshly to Abu Bakr As-Siddiq, and I said: 'Shall I kill him?' He told me off, and said: 'That is not for anyone after the Messenger of Allah .'"
Sunan an-Nasa'i Book 37, Hadith 106