You should give the sum of money to your daughters, because it belongs to them. It is impermissible for you to
dispose of it, whether in the way you mentioned or otherwise, except with their permission, if they are of age. This is based on the words of Allah (Exalted be He) who says,
And try orphans (as regards their intelligence) until they reach the age of marriage; if then you find sound judgement in them, release their property to them
(Surah Al-Nisa', 4: 6). May Allah grant us success. May peace and blessings be upon our Prophet Muhammad, his family, and Companions.