Abu Dharr (May Allah be pleased with him) reported:
I asked the Messenger of Allah ﷺ, "Which deed is most excellent?" He replied, "Faith in Allah and Jihad in His path." I then asked, "Which slaves are most excellent (to set free)?" He replied, "Those who are held in high esteem by their people and whose value is higher."

[Al-Bukhari and Muslim].

وعن أبي ذر رضي الله عنه قال: قلت يا رسول الله أي الأعمال أفضل؟ قال: "الإيمان بالله، والجهاد في سبيل الله" قلت: أي الرقاب أفضل؟ قال: "أنفسها عند أهلها وأكثرها ثمنًا” ((متفق عليه))