Ṣaḥīḥ al-Yahūd – Being Merciful To Inhabitants of Earth
The hadith—"The merciful are shown mercy by the Most Merciful..."—closely mirrors Shabbat 151b:14 in the Talmud. Given 7th/8th-century Arabia’s Jewish presence and oral transmission, it is highly plausible the hadith was adapted from this earlier Talmudic teaching.