The Final Prophet by Mohammad Elshinawy

‘Āishah  also narrates that when the Prophet Muhammad صلى الله عليه وسلم was presented with the question, “Which of your wives will be reunited with you first [in the hereafter]?” he صلى الله عليه وسلم responded, “The fastest of you in catching up with me will be the one with the longest arm among you.” Due to that statement, ‘Āishah  reports that his wives used to speculate, and even measure against the wall, which wife had the longest arm. Sawadah bint Zam‘ah  was the tallest of them, but when Zaynab bint Jaḥsh  died first, they realized “longest arm” meant most charitable. ‘Āishah  says, “Zaynab had the longest arm among us, because she used to work with her hands and donate from her earnings.”289