Is it permissible to use free insulin pens despite their unknown source?

If the daughter is entitled to the injections for free according to the regulations of the Ministry of Health, then there is no harm in that. However, if obtaining them involves deception, then it is impermissible, as the Prophet, peace and blessings be upon him, said: "Muslims are bound by their conditions." Regulations must be adhered to, except in cases of extreme necessity where the daughter's life is feared to be in danger and her father cannot find the price of the injections.