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'." (IT)
English reference (IT): Vol. 1, Book 5, Hadith 856 (IT)
Arabic reference (IT): Book 5, Hadith 905 (IT)