It wasnarrated from 'Aishah that the Prophet (ﷺ) said:
"The Jewsdonot envy you for anything more than they envy you for the Salam and(saying) 'Amin'." (RU)
English reference (RU): Vol. 1, Book 5, Hadith 856 (RU)
Arabic reference (RU): Book 5, Hadith 905 (RU)