you leave, if you have no child; but if you have a child, then for them is one-eighth of what you leave, after any bequest you may make or debt."
Muhammad said: "Wasiyyatan" (a bequest) is read both in the nominative (raf') and the accusative (nasb) cases. Whoever reads it in the accusative intends the meaning: "Let them bequeath a bequest," and whoever reads it in the nominative does so based on the meaning: "Upon them is a bequest." "Mata'an" (maintenance/provision) is in the accusative with the meaning: "Provide them with provision."
His saying: "But if they leave, there is no sin upon you for what they do with themselves in an honorable manner," means: that they may adorn themselves, seek to look attractive, and seek husbands.