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If, however, the younger person fails to greet, the duty then shifts to the elder; therefore let the elder extend the salām. Indeed, whenever you take the initiative and greet first—as we have already noted—that is better, for the people nearest to Allah are those who begin others with the greeting of peace.
على الكبير فإنه لم يسلم فليسلم الكبير حتى إذا بادرت بالسلام كما قلنا من قبل كان أفضل وأولى الناس بالله من يبدؤهم بالسلام