“There is no blame upon him for going between the two” (al-Baqarah 2:158).
ʿĀʾishah was asked whether the wording “no blame” meant that traversing Ṣafā and Marwah was merely optional. The explanation addresses a pre-Islamic scruple that made some people uneasy about the practice: the words remove that perceived blame.
Removing a mistaken scruple does not by itself define every aspect of the practice's legal status. Whether it is required must be considered with the other pertinent proofs, not inferred solely from the phrase “no blame.”