Another chain from Umm Hani' who said:
"I granted asylum for two men among my brother-in-laws. So the Messeneger of Allah ﷺ said: 'We grant security to whomever you have granted security.'"
[Abu 'Eisa said:] This Hadith is Hasan Sahih.
This is acted upon according to the people of knowledge. They permit assurance of protection by a women. This is the view of Ahmad and Ishaq. They permitted the asylum of a woman and slave
It has been related from other routes from 'Umar bin Al-Khattab that he permitted the asylum granted by a slave.
One of the narrators of this last narration Abu Murrah is the freed slave of 'Aqil bin Abi Talib - they also say that he was freed slave of Umm Hani' - and his name was Yazid.
It has been related from 'Ali bin Abi Talib and 'Abdullah bin 'Amr that the Prophet ﷺ said: "The covenants of the Muslims are one, it covers the rest of them."
[Abu 'Eisa said:] According to the people of knowledge, the meaning of this Hadith is that whoever gives assurance of protection among the Muslims, then it is valis to all of them.
• Jami` at-Tirmidhi, Vol. 3, Book of Military Expeditions, Hadith 1579b
• Jami` at-Tirmidhi, Book of Military Expeditions, Hadith 1579b