Sünen-i Tirmîzî — The Book on Marriage — Hadis No: 1098

Abu Umamah, and other than him from the Companions of the Prophet (ﷺ), narrated that the Prophet (ﷺ) said:"Any Muslim man who frees a Muslim man, then it is his salvation from the Fire - each of his limbs suffices for a limb of himself. And any Muslim man that frees two Muslim women, then are his salvation from the Fire - each of their limbs suffices for a limb of himself. And any Muslim woman that frees a Muslim woman, then she is her salvation from the Fire - each of her limb suffices for a limb of herself

Narrated Shurahbil bin As-Samt: "O Ka'b bin Murrah! Relate (something) to is from the Messenger of Allah (ﷺ), and be cautious. He said: 'I heard the Prophet (ﷺ) say: "Whoever develops some gray hair in Islam, it shall be a light from him on the Day of Judgement." [Abu 'Eisa said:] There is something on this topic from Fadalah bin 'Ubaid and 'Abdullah bin 'Amr. The narration of Ka'b bin Murrah was reported like this from Al-A'mash, from 'Amr bin Murrah. This Hadith is been reported from Mansur, from Salim bin Abu Al-Ja'd, and he included a man between him and between Ka'b bin Murrah in the chain. He is called: "Ka'b bin Murrah," and he is called: "Murrah bin Ka'b Al-Bahzi," and the one known among the Companions of the Prophet (ﷺ) is Ka'b bin Murrah Al-Bahzi, he reported some Ahadith from the Prophet (ﷺ)

Narrated Ibn 'Asim Al-Muzani:From his father and he was a Companion who said: "When the Messenger of Allah (ﷺ) dispatched any army or battalion, he would say to them: 'If you see a Masjid, or hear someone calling the Adhan, then do not kill anyone

Narrated 'Imran bin Husain: That the Prophet (ﷺ) ransomed two men for the Muslims with a man from the idolaters. [Abu 'Eisa said:] This Hadith is Hasan Sahih. The paternal uncle of Abu Al-Muhallab's name is 'Abdur Rahman bin 'Amr, and they also say it was Muhawiyah bin 'Amr. And Abu Qilabah's name is 'Abdullah bin Zaid Al-Jarmi (narrator in the chain) This is acted upon according to most of the people of knowledge among the Companions of the Prophet(ﷺ) and others. It is for the Imam to decide to be generous with whom he wills among the captives, or to kill whom he wills among them, or to ransom whom he wills among them. Some of the people of knowledge preferred killing over ransoming. Al-Awzai' said: "It has been conveyed to me. that this Ayah is abrogated: Thereafter (is the time) either for generosity (to free them without ranson) or ransom (47:4). It was abrogated by: Kill them wherever you find them (2:191). This was narrated to us by Hannad (who said): "Ibn Al-Mubarak narrated to us, from Al-Awza'i." Ishaq bin Mansur said: "I said to Ahmad: 'When the captives are captured' is killing or ransoming better to you?' He said: 'If they are able to ransom' then there is no harm in it. And if they kill, then I do not know of any harm in it.'" Ishaq said: "Wiping them out is better to me, unless it is someone well-known, so that it is hoped that a large amount will be obtained for him